adj · name · noun · verb · 55 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
Received-Pronunciation:kô
Received-Pronunciation:/kɔː/
General-American:kôr
General-American:/kɔɹ/
General-American:[kho̞ɹ]
US:Recorded audio is listed in the source snapshot.
rhymes with -ɔː(ɹ)
homophone: corps
homophone: caw (non-rhotic, horse–hoarse merger)
/ko(ː)ɹ/rhotic, without the horse–hoarse merger
/koə/non-rhotic, without the horse–hoarse merger
CMU ARPABET:K AO1 R
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Forming the most important or essential part.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
adj
Meaning 2
Deeply and authentically involved in the culture surrounding the sport.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Qualifier: board sports
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
name
Meaning 3
Acronym of Congress of Racial Equality.
Definition source: English Wiktionary via Wiktextract
Usage: US, abbreviation, acronym, alt-of
Topics: government, politics
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
name
Meaning 4
Acronym of Center for Operations Research and Econometrics
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, acronym, alt-of
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
name
Meaning 5
Acronym of Consortium for Oceanographic Research and Education.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, acronym, alt-of
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
name
Meaning 6
Acronym of Council on Rehabilitation Education.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, acronym, alt-of
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
7
name
Meaning 7
Acronym of Computing Research and Education Association.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, acronym, alt-of
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
8
name
Meaning 8
The birth name of Persephone/Proserpina, the queen of the Underworld/Hades, and goddess of the seasons and of vegetation. She is the daughter of Zeus and Demeter, and the wife of Hades.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
24
noun
Meaning 24
particular parts of technical instruments or machines essential in function:
An individual computer processor, in the sense when several processors (called cores or CPU cores) are plugged together in one single integrated circuit to work as one (called a multi-core processor).
Definition source: English Wiktionary via Wiktextract
I wanted to play a particular computer game, which required I buy a new computer, so while the game said it needed at least a dual-core processor, I wanted my computer to be a bit ahead of the curve, so I bought a quad-core.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
25
noun
Meaning 25
particular parts of technical instruments or machines essential in function:
The material between surface materials in a structured composite sandwich material.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
27
noun
Meaning 27
particular parts of technical instruments or machines essential in function:
The central fissile portion of a fission weapon.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: government, military, politics, war
Examples
In a hollow-core design, neutrons escape from the core more readily, allowing more fissile material to be used (and thus allowing for a greater yield) while still keeping the core subcritical prior to detonation.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
28
noun
Meaning 28
particular parts of technical instruments or machines essential in function:
A piece of ferromagnetic material (e.g., soft iron), inside the windings of an electromagnet, that channels the magnetic field.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
29
noun
Meaning 29
particular parts of technical instruments or machines essential in function:
A hollow cylindrical piece of cardboard around which a web of paper or plastic is wound.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: media, printing, publishing
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
30
noun
Meaning 30
Hence particular parts of a subject studied or examined by technical operations, likened by position and practical or structural robustness to kernels, cores in the general sense above.
A tiny sample of organic material obtained by means of a fine-needle biopsy.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: medicine, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
31
noun
Meaning 31
Hence particular parts of a subject studied or examined by technical operations, likened by position and practical or structural robustness to kernels, cores in the general sense above.
The bony process which forms the central axis of the horns in many animals.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
32
noun
Meaning 32
Hence particular parts of a subject studied or examined by technical operations, likened by position and practical or structural robustness to kernels, cores in the general sense above.
A disorder of sheep caused by worms in the liver.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
33
noun
Meaning 33
Hence particular parts of a subject studied or examined by technical operations, likened by position and practical or structural robustness to kernels, cores in the general sense above.
The central part of a protein's structure, consisting mostly of hydrophobic amino acids.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
34
noun
Meaning 34
Hence particular parts of a subject studied or examined by technical operations, likened by position and practical or structural robustness to kernels, cores in the general sense above.
A cylindrical sample of rock or other materials obtained by core drilling.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
35
noun
Meaning 35
Hence particular parts of a subject studied or examined by technical operations, likened by position and practical or structural robustness to kernels, cores in the general sense above.
An atomic nucleus plus inner electrons (i.e., an atom, except for its valence electrons).
Definition source: English Wiktionary via Wiktextract
five periodicals make up the core of their publishing program
Meaning relationships
Synonyms: nucleus, core group
Antonyms: none provided
Broader terms: set
Narrower terms: cadre
51
noun
Meaning 51
an organization founded by James Leonard Farmer in 1942 to work for racial equality
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: Congress of Racial Equality
Antonyms: none provided
Broader terms: nongovernmental organization, NGO
52
noun
Meaning 52
the center of an object
Definition source: Princeton WordNet 3.0
Examples
the ball has a titanium core
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: center, centre, midpoint
Narrower terms: corncob, corn cob
53
noun
Meaning 53
the central part of the Earth
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: center, centre, midpoint
54
noun
Meaning 54
a cylindrical sample of soil or rock obtained with a hollow drill
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: sample
55
verb
Meaning 55
remove the core or center from
Definition source: Princeton WordNet 3.0
Examples
core an apple
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: hollow, hollow out, core out
History
Etymology
From Middle English core, kore, coor (“apple-core, pith”), of obscure and uncertain origin. Possibly of native English origin, from Old English *cor, related to Old English *coruc, *corc (diminutive) (> Middle English cork, crok (“core of an apple or other fruit, heart of an onion”)) and Old English corn (“seed", also "grain”); or alternatively perhaps from Old French cuer (“heart”), from Latin cor (“heart”); or from Old French cors (“body”), from Latin corpus (“body”). Compare also Middle English colk, coke, coll (“the heart or centre of an apple or onion, core”), Dutch kern (“core”), German Kern (“core”). See also heart, corpse. Compare typologically Russian серде́чник (serdéčnik), сердцеви́на (serdcevína)) (akin to се́рдце (sérdce), cognate with heart, Latin cor).
Learned borrowing from Ancient Greek κόρη (kórē, “maiden”).
From French Coré.
See corps.
See chore.
From Biblical Hebrew כֹּר (kōr).
Possibly an acronym for cash on return.
From -core, ultimately from Etymology 1.
Across languages
Translations
244 source translations are retained for this English entry.
Arabic:
نِوَاة
(niwāh)
— central part of fruit, containing the kernels or seeds
Aromanian:
njedz
— central part of fruit, containing the kernels or seeds
Aromanian:
njedzu
— central part of fruit, containing the kernels or seeds
Azerbaijani:
koşək
— central part of fruit, containing the kernels or seeds
Azerbaijani:
eşələk
— central part of fruit, containing the kernels or seeds
Catalan:
caluix
— central part of fruit, containing the kernels or seeds
Chinese Mandarin:
核
(hé)
— central part of fruit, containing the kernels or seeds
Czech:
jaderník
— central part of fruit, containing the kernels or seeds
Czech:
ohryzek
— central part of fruit, containing the kernels or seeds
Dutch:
klokhuis
— central part of fruit, containing the kernels or seeds
Esperanto:
kerno
— central part of fruit, containing the kernels or seeds
Finnish:
siemenkota
— central part of fruit, containing the kernels or seeds
Finnish:
kara
— central part of fruit, containing the kernels or seeds
French:
trognon
— central part of fruit, containing the kernels or seeds
French:
noyau
— central part of fruit, containing the kernels or seeds
French:
cœur
— central part of fruit, containing the kernels or seeds
German:
Kerngehäuse
— central part of fruit, containing the kernels or seeds
German:
Bëtzgi
— central part of fruit, containing the kernels or seeds
Greek:
πυρήνας
(pyrínas)
— central part of fruit, containing the kernels or seeds
Hawaiian:
ʻīkoi
— central part of fruit, containing the kernels or seeds
Hebrew:
ליבה
(libá)
— central part of fruit, containing the kernels or seeds
Hindi:
गूदा
(gūdā)
— central part of fruit, containing the kernels or seeds
Hungarian:
magház
— central part of fruit, containing the kernels or seeds
Hungarian:
csutka
— central part of fruit, containing the kernels or seeds
Irish:
croí
— central part of fruit, containing the kernels or seeds
Italian:
nocciolo
— central part of fruit, containing the kernels or seeds
Japanese:
仲核
(chūkaku)
— central part of fruit, containing the kernels or seeds
Japanese:
芯
(shin)
— central part of fruit, containing the kernels or seeds
Japanese:
果心
(kashin)
— central part of fruit, containing the kernels or seeds
Korean:
중심부
(jungsimbu)
— central part of fruit, containing the kernels or seeds
Korean:
심
(sim)
— central part of fruit, containing the kernels or seeds
Latvian:
serde
— central part of fruit, containing the kernels or seeds
Lithuanian:
šerdis
— central part of fruit, containing the kernels or seeds
Māori:
hune (of breadfruit)
— central part of fruit, containing the kernels or seeds
Middle English:
colk
— central part of fruit, containing the kernels or seeds
Middle English:
core
— central part of fruit, containing the kernels or seeds
Norwegian Bokmål:
kjerne
— central part of fruit, containing the kernels or seeds
Norwegian Nynorsk:
kjerne
— central part of fruit, containing the kernels or seeds
Persian:
هسته
(haste)
— central part of fruit, containing the kernels or seeds
Persian:
مغزه
(maġze)
— central part of fruit, containing the kernels or seeds
Polish:
gniazdo nasienne
— central part of fruit, containing the kernels or seeds
Polish:
ogryzek
— central part of fruit, containing the kernels or seeds
Portuguese:
caroço
— central part of fruit, containing the kernels or seeds
Quechua:
sunqu
— central part of fruit, containing the kernels or seeds
Romanian:
miez
— central part of fruit, containing the kernels or seeds
Russian:
ядро́
(jadró)
— central part of fruit, containing the kernels or seeds
Russian:
сердцеви́на
(serdcevína)
— central part of fruit, containing the kernels or seeds
Samoan:
fune (of breadfruit)
— central part of fruit, containing the kernels or seeds
Scottish Gaelic:
eitean
— central part of fruit, containing the kernels or seeds
Spanish:
corazón
— central part of fruit, containing the kernels or seeds
Spanish:
tuétano
— central part of fruit, containing the kernels or seeds
Spanish:
carozo
— central part of fruit, containing the kernels or seeds
Spanish:
corozo
— central part of fruit, containing the kernels or seeds
Spanish:
tútano (desus.)
— central part of fruit, containing the kernels or seeds
Spanish:
güito
— central part of fruit, containing the kernels or seeds
Swedish:
kärnhus
— central part of fruit, containing the kernels or seeds
Tahitian:
hune (of breadfruit)
— central part of fruit, containing the kernels or seeds
Tongan:
fune (of breadfruit)
— central part of fruit, containing the kernels or seeds
Turkish:
eşelek
— central part of fruit, containing the kernels or seeds
Ottoman Turkish:
گوبك
(göbek)
— central part of fruit, containing the kernels or seeds
Ukrainian:
ядро́
(jadró)
— central part of fruit, containing the kernels or seeds
Ukrainian:
осе́рдя
(osérdja)
— central part of fruit, containing the kernels or seeds
Vietnamese:
lõi
— central part of fruit, containing the kernels or seeds
Vietnamese:
tâm
— central part of fruit, containing the kernels or seeds
Bulgarian:
сърцеви́на
(sǎrcevína)
— heart of a thing
Catalan:
cor
— heart of a thing
Catalan:
nucli
— heart of a thing
Czech:
jádro
— heart of a thing
Dutch:
kern
— heart of a thing
Dutch:
binnenste
— heart of a thing
Esperanto:
kerno
— heart of a thing
Finnish:
ydin
— heart of a thing
French:
cœur
— heart of a thing
German:
Kern
— heart of a thing
Hebrew:
ליבה
(libá)
— heart of a thing
Hebrew:
לב
(lev)
— heart of a thing
Italian:
nocciolo
— heart of a thing
Italian:
cuore
— heart of a thing
Māori:
nganga
— heart of a thing
Māori:
nape
— heart of a thing
Māori:
whatu
— heart of a thing
Māori:
uho
— heart of a thing
Middle English:
core
— heart of a thing
Khiamniungan Naga:
ā-àutīng
— heart of a thing
Norwegian Bokmål:
kjerne
— heart of a thing
Norwegian Nynorsk:
kjerne
— heart of a thing
Polish:
rdzeń
— heart of a thing
Polish:
jądro
— heart of a thing
Portuguese:
cerne
— heart of a thing
Portuguese:
miolo
— heart of a thing
Romanian:
miez
— heart of a thing
Russian:
сердцеви́на
(serdcevína)
— heart of a thing
Scottish Gaelic:
eitean
— heart of a thing
Scottish Gaelic:
cridhe
— heart of a thing
Spanish:
núcleo
— heart of a thing
Spanish:
centro
— heart of a thing
Spanish:
cogollo
— heart of a thing
Swedish:
kärna
— heart of a thing
Turkish:
öz
— heart of a thing
Ukrainian:
осе́рдя
(osérdja)
— heart of a thing
Yiddish:
תּוך
(tokh)
— heart of a thing
Azerbaijani:
nüvə
— center or inner part
Catalan:
cor
— center or inner part
Catalan:
nucli
— center or inner part
Chinese Mandarin:
核心
(héxīn)
— center or inner part
Czech:
jádro
— center or inner part
Dutch:
kern
— center or inner part
Finnish:
keskusta
— center or inner part
French:
centre
— center or inner part
French:
cœur
— center or inner part
German:
Kern
— center or inner part
Hebrew:
ליבה
(libá)
— center or inner part
Hebrew:
לב
(lev)
— center or inner part
Indonesian:
inti
— center or inner part
Ingrian:
syän
— center or inner part
Irish:
croí
— center or inner part
Italian:
anima
— center or inner part
Italian:
centro
— center or inner part
Italian:
nucleo
— center or inner part
Japanese:
芯
(shin)
— center or inner part
Japanese:
中心
(chūshin)
— center or inner part
Khmer:
ចំនុច
(cɑmnuc)
— center or inner part
Korean:
핵심
(haeksim)
— center or inner part
Māori:
uho
— center or inner part
Khiamniungan Naga:
ā-àutīng
— center or inner part
Norwegian Bokmål:
kjerne
— center or inner part
Norwegian Nynorsk:
kjerne
— center or inner part
Portuguese:
cerne
— center or inner part
Portuguese:
núcleo
— center or inner part
Romanian:
miez
— center or inner part
Russian:
ядро́
(jadró)
— center or inner part
Russian:
центр
(centr)
— center or inner part
Russian:
середи́на
(seredína)
— center or inner part
Russian:
сердцеви́на
(serdcevína)
— center or inner part
Scottish Gaelic:
cridhe
— center or inner part
Scottish Gaelic:
eitean
— center or inner part
Spanish:
núcleo
— center or inner part
Spanish:
centro
— center or inner part
Spanish:
cogollo
— center or inner part
Tagalog:
ubod
— center or inner part
Turkish:
çekirdek
— center or inner part
Ukrainian:
ядро́
(jadró)
— center or inner part
Ukrainian:
осе́рдя
(osérdja)
— center or inner part
Ukrainian:
серцеви́на
(sercevýna)
— center or inner part
Ukrainian:
середи́на
(seredýna)
— center or inner part
Vietnamese:
lõi
— center or inner part
Vietnamese:
tâm
— center or inner part
Bulgarian:
същина
(sǎština)
— most important part of a thing
Czech:
jádro
— most important part of a thing
Czech:
podstata
— most important part of a thing
Dutch:
kern
— most important part of a thing
Finnish:
ydin
— most important part of a thing
French:
cœur
— most important part of a thing
German:
Kern
— most important part of a thing
Greek:
πυρήνας
(pyrínas)
— most important part of a thing
Hebrew:
ליבה
(libá)
— most important part of a thing
Hebrew:
לב
(lev)
— most important part of a thing
Hebrew:
מהות
(mahút)
— most important part of a thing
Ingrian:
syän
— most important part of a thing
Irish:
croí
— most important part of a thing
Italian:
essenza
— most important part of a thing
Italian:
fondamento
— most important part of a thing
Italian:
nocciolo
— most important part of a thing
Māori:
mutu
— most important part of a thing
Māori:
tino
— most important part of a thing
Khiamniungan Naga:
ā-àutīng
— most important part of a thing
Norwegian Bokmål:
kjerne
— most important part of a thing
Norwegian Nynorsk:
kjerne
— most important part of a thing
Portuguese:
âmago
— most important part of a thing
Portuguese:
cerne
— most important part of a thing
Portuguese:
coração
— most important part of a thing
Portuguese:
essência
— most important part of a thing
Romanian:
miez
— most important part of a thing
Romanian:
esență
— most important part of a thing
Russian:
суть
(sutʹ)
— most important part of a thing
Russian:
су́щность
(súščnostʹ)
— most important part of a thing
Scottish Gaelic:
cridhe
— most important part of a thing
Scottish Gaelic:
eitean
— most important part of a thing
Slovene:
jedro
— most important part of a thing
Spanish:
esencia
— most important part of a thing
Spanish:
meollo
— most important part of a thing
Turkish:
ana
— most important part of a thing
Turkish:
öz
— most important part of a thing
Turkish:
nüve
— most important part of a thing
Ukrainian:
суть
(sutʹ)
— most important part of a thing
Ukrainian:
су́тність
(sútnistʹ)
— most important part of a thing
Yiddish:
תּוך
(tokh)
— most important part of a thing
Bulgarian:
сърцеви́на
(sǎrcevína)
— something that produces a hollow space in a casting
Finnish:
keerna
— something that produces a hollow space in a casting
Finnish:
valusydän
— something that produces a hollow space in a casting
Russian:
сердцеви́на
(serdcevína)
— something that produces a hollow space in a casting
Turkish:
maça
— something that produces a hollow space in a casting
Ukrainian:
серцеви́на
(sercevýna)
— something that produces a hollow space in a casting
Finnish:
ydin
— heart of a horn
Esperanto:
ĉefmemoro
— computing: magnetic memory
Esperanto:
magnetkerna memoro
— computing: magnetic memory
Finnish:
rengasmuisti
— computing: magnetic memory
German:
Kernspeicher
— computing: magnetic memory
Turkish:
çekirdek bellek
— computing: magnetic memory
Azerbaijani:
nüvə
— one of several parts in a computer processor
Chinese Mandarin:
核
— one of several parts in a computer processor
Czech:
jádro
— one of several parts in a computer processor
Finnish:
ydin
— one of several parts in a computer processor
Finnish:
suoritinydin
— one of several parts in a computer processor
French:
cœur
— one of several parts in a computer processor
German:
Kern
— one of several parts in a computer processor
Persian:
هسته
(haste)
— one of several parts in a computer processor
Polish:
rdzeń
— one of several parts in a computer processor
Portuguese:
core
— one of several parts in a computer processor
Portuguese:
núcleo
— one of several parts in a computer processor
Romanian:
nucleu
— one of several parts in a computer processor
Russian:
ядро́
(jadró)
— one of several parts in a computer processor
Spanish:
núcleo
— one of several parts in a computer processor
Turkish:
çekirdek
— one of several parts in a computer processor
Ukrainian:
ядро́
(jadró)
— one of several parts in a computer processor
Chinese Mandarin:
堆芯
(duīxīn)
— inner part of a nuclear reactor, in which the nuclear reaction takes place
Russian:
активная зона
(aktivnaja zona)
— inner part of a nuclear reactor, in which the nuclear reaction takes place
Catalan:
testimoni
— cylindrical sample
French:
carotte
— cylindrical sample
Norwegian Bokmål:
kjerne
— cylindrical sample
Norwegian Nynorsk:
kjerne
— cylindrical sample
Russian:
керн
(kern)
— cylindrical sample
Czech:
dutinka
— hollow cylindrical piece of cardboard
French:
mandrin
— hollow cylindrical piece of cardboard
Swedish:
kärna
— hollow cylindrical piece of cardboard
Hungarian:
atomtörzs
— atomic nucleus plus inner/core electrons
Italian:
nucleo
— atomic nucleus plus inner/core electrons