noun · verb · 23 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.
UK:/ˈkɜː.nəl/
US:/ˈkɝ.nəl/
Australia:Recorded audio is listed in the source snapshot.
/ˈkərnəl/South Asia, rhotic
/ˈkɛrnəl/South Asia, rhotic; without the fern–fir–fur merger
/ˈkɜnəl/South Asia, non-rhotic
homophone: colonel (most accents)
rhymes with -ɜː(ɹ)nəl
CMU ARPABET:K ER1 N AH0 L
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
The core, center, or essence of an object or system.
Definition source: English Wiktionary via Wiktextract
Examples
the kernel of an argument
Meaning relationships
Synonyms: crux, gist, bowels, sum, brass tacks, core, essence, drift, guts, gravamen, heart, heart and soul, heartstring, heartstrings, inwardness, kernel, marrow, meat, moral of the story, nitty-gritty, nub, nuts and bolts, pith, punctum saliens, quintessence, soul, spirit, stuff, substance, tenor
Antonyms: none provided
2
noun
Meaning 2
The central (usually edible) part of a nut, especially once the hard shell has been removed.
Definition source: English Wiktionary via Wiktextract
Topics: biology, botany, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
A single seed of grain, especially of corn or wheat.
Definition source: English Wiktionary via Wiktextract
Topics: biology, botany, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
The stone of certain fruits, such as peaches or plums.
Definition source: English Wiktionary via Wiktextract
Usage: US
Topics: biology, botany, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
noun
Meaning 5
A small mass around which other matter is concreted; a nucleus; a concretion or hard lump in the flesh.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
noun
Meaning 6
The central part of many computer operating systems which manages the system's resources and the communication between hardware and software components.
Definition source: English Wiktionary via Wiktextract
Narrower terms: bare bones, hypostasis, quiddity, haecceity, quintessence, stuff
22
noun
Meaning 22
a single whole grain of a cereal
Definition source: Princeton WordNet 3.0
Examples
a kernel of corn
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: grain, caryopsis
Narrower terms: corn
23
noun
Meaning 23
the inner and usually edible part of a seed or grain or nut or fruit stone
Definition source: Princeton WordNet 3.0
Examples
black walnut kernels are difficult to get out of the shell
Meaning relationships
Synonyms: meat
Antonyms: none provided
Broader terms: plant part, plant structure
History
Etymology
Etymology tree Proto-Indo-European *ǵerh2- Proto-Indo-European *-nóm Proto-Indo-European *ǵr̥h2-nós Proto-Indo-European *ǵr̥h2nóm Proto-Germanic *kurną Proto-West Germanic *korn Proto-Indo-European *-lósder. Proto-Germanic *-ilaz Proto-West Germanic *-il Proto-West Germanic *kurnil Old English cyrnel Middle English kirnel English kernel From Middle English kernel, kirnel, kürnel, from Old English cyrnel, from Proto-West Germanic *kurnil, diminutive of Proto-Germanic *kurną (“seed, grain, corn”), equivalent to corn + -le. Cognate with Yiddish קערנדל (kerndl), Middle Dutch kernel, cornel, Middle High German kornel. Related also to Old Norse kjarni (“kernel”).
Across languages
Translations
163 source translations are retained for this English entry.
Armenian:
միջուկ
(miǰuk)
— core or essence of an object or system
Armenian:
կորիզ
(koriz)
— core or essence of an object or system
Bulgarian:
ядро́
(jadró)
— core or essence of an object or system
Bulgarian:
съ́щност
(sǎ́štnost)
— core or essence of an object or system
Chinese Mandarin:
核心
(héxīn)
— core or essence of an object or system
Finnish:
ydin
— core or essence of an object or system
French:
fond
— core or essence of an object or system
French:
cœur
— core or essence of an object or system
Galician:
cerne
— core or essence of an object or system
Georgian:
მარცვალი
(marcvali)
— core or essence of an object or system
Georgian:
გული
(guli)
— core or essence of an object or system
Georgian:
არსი
(arsi)
— core or essence of an object or system
German:
Kern
— core or essence of an object or system
Greek:
πυρήνας
(pyrínas)
— core or essence of an object or system
Irish:
eithne
— core or essence of an object or system
Italian:
nucleo
— core or essence of an object or system
Italian:
nocciolo
— core or essence of an object or system
Japanese:
核心
(kakushin)
— core or essence of an object or system
Korean:
핵심
(haeksim)
— core or essence of an object or system
Macedonian:
јадро
(jadro)
— core or essence of an object or system
Macedonian:
срж
(srž)
— core or essence of an object or system
Māori:
karihi
— core or essence of an object or system
Middle English:
kirnel
— core or essence of an object or system
Polish:
trzon
— core or essence of an object or system
Polish:
rdzeń
— core or essence of an object or system
Polish:
sedno
— core or essence of an object or system
Portuguese:
cerne
— core or essence of an object or system
Russian:
суть
(sutʹ)
— core or essence of an object or system
Russian:
су́щность
(súščnostʹ)
— core or essence of an object or system
Scottish Gaelic:
eitean
— core or essence of an object or system
Scottish Gaelic:
cridhe
— core or essence of an object or system
Lower Sorbian:
jědro
— core or essence of an object or system
Spanish:
núcleo
— core or essence of an object or system
Swedish:
kärna
— core or essence of an object or system
Turkish:
öz
— core or essence of an object or system
Turkish:
nüve
— core or essence of an object or system
Yiddish:
קערן
(kern)
— core or essence of an object or system
Azerbaijani:
özək
— central part of a nut
Bulgarian:
я́дка
(jádka)
— central part of a nut
Czech:
jádro
— central part of a nut
Finnish:
pähkinä
— central part of a nut
French:
amande
— central part of a nut
French:
cerneau
— central part of a nut
Georgian:
გული
(guli)
— central part of a nut
German:
Kern
— central part of a nut
Greek:
πυρήνας
(pyrínas)
— central part of a nut
Hawaiian:
ʻanoʻano
— central part of a nut
Icelandic:
kjarni
— central part of a nut
Ingrian:
toomi
— central part of a nut
Italian:
gheriglio
— central part of a nut
Japanese:
仁
(jin)
— central part of a nut
Macedonian:
срцевина
(srcevina)
— central part of a nut
Māori:
kākano
— central part of a nut
Māori:
karihi
— central part of a nut
Māori:
kiko
— central part of a nut
Māori:
kikokiko
— central part of a nut
Middle English:
kirnel
— central part of a nut
Old English:
cyrnel
— central part of a nut
Portuguese:
miolo
— central part of a nut
Russian:
ядро́
(jadró)
— central part of a nut
Russian:
сердцеви́на
(serdcevína)
— central part of a nut
Samoan:
ʻaʻano
— central part of a nut
Scottish Gaelic:
eitean
— central part of a nut
Lower Sorbian:
jědro
— central part of a nut
Spanish:
almendra
— central part of a nut
Spanish:
núcleo
— central part of a nut
Swedish:
kärna
— central part of a nut
Tongan:
kano
— central part of a nut
Turkish:
göbek
— central part of a nut
Yiddish:
קערנדל
(kerndl)
— central part of a nut
Bulgarian:
зърно́
(zǎrnó)
— single seed of corn or wheat
Dutch:
graan
— single seed of corn or wheat
Finnish:
jyvä
— single seed of corn or wheat
French:
grain
— single seed of corn or wheat
Georgian:
მარცვალი
(marcvali)
— single seed of corn or wheat
Gothic:
𐌺𐌰𐌿𐍂𐌽𐍉
(kaurnō)
— single seed of corn or wheat
Ancient Greek:
κόκκος
(kókkos)
— single seed of corn or wheat
Italian:
chicco
— single seed of corn or wheat
Macedonian:
зрно
(zrno)
— single seed of corn or wheat
Middle English:
kirnel
— single seed of corn or wheat
Polish:
ziarno
— single seed of corn or wheat
Portuguese:
grão
— single seed of corn or wheat
Russian:
зерно́
(zernó)
— single seed of corn or wheat
Russian:
зёрнышко
(zjórnyško)
— single seed of corn or wheat
Scottish Gaelic:
sìol
— single seed of corn or wheat
Spanish:
grano
— single seed of corn or wheat
Swedish:
korn
— single seed of corn or wheat
Tarifit:
taɣyašt
— single seed of corn or wheat
Turkish:
tane
— single seed of corn or wheat
Yiddish:
קערנדל
(kerndl)
— single seed of corn or wheat
Armenian:
կորիզ
(koriz)
— (US) stone of certain fruits, such as peaches or plums
Bashkir:
һөйәк
(höyək)
— (US) stone of certain fruits, such as peaches or plums
Bulgarian:
костилка
(kostilka)
— (US) stone of certain fruits, such as peaches or plums
Czech:
pecka
— (US) stone of certain fruits, such as peaches or plums
Finnish:
kivi
— (US) stone of certain fruits, such as peaches or plums
French:
noyau
— (US) stone of certain fruits, such as peaches or plums
Greek:
πυρήνας
(pyrínas)
— (US) stone of certain fruits, such as peaches or plums
Greek:
κουκούτσι
(koukoútsi)
— (US) stone of certain fruits, such as peaches or plums
Indonesian:
kernel
— (US) stone of certain fruits, such as peaches or plums
Italian:
nocciolo
— (US) stone of certain fruits, such as peaches or plums
Kyrgyz:
өзөк
(özök)
— (US) stone of certain fruits, such as peaches or plums
Macedonian:
голушка
(goluška)
— (US) stone of certain fruits, such as peaches or plums
Macedonian:
коска
(koska)
— (US) stone of certain fruits, such as peaches or plums
Middle English:
kirnel
— (US) stone of certain fruits, such as peaches or plums
Polish:
pestka
— (US) stone of certain fruits, such as peaches or plums
Portuguese:
caroço
— (US) stone of certain fruits, such as peaches or plums
Russian:
ко́сточка
(kóstočka)
— (US) stone of certain fruits, such as peaches or plums
Spanish:
hueso
— (US) stone of certain fruits, such as peaches or plums
Spanish:
núcleo
— (US) stone of certain fruits, such as peaches or plums
Turkish:
çekirdek
— (US) stone of certain fruits, such as peaches or plums
Turkish:
nüve
— (US) stone of certain fruits, such as peaches or plums
Abkhaz:
агәаҭа
(agwata)
— (computing) central part of many computer operating systems
Arabic:
نَوَاة
(nawāh)
— (computing) central part of many computer operating systems
Arabic:
نواة
(nuwāt)
— (computing) central part of many computer operating systems
Bulgarian:
ядро
(jadro)
— (computing) central part of many computer operating systems
Czech:
jádro
— (computing) central part of many computer operating systems
Danish:
kerne
— (computing) central part of many computer operating systems
Finnish:
käyttöjärjestelmäydin
— (computing) central part of many computer operating systems
Finnish:
ydin
— (computing) central part of many computer operating systems
Finnish:
kerneli
— (computing) central part of many computer operating systems
French:
noyau
— (computing) central part of many computer operating systems
French:
kernel
— (computing) central part of many computer operating systems
French:
noyau de système d’exploitation
— (computing) central part of many computer operating systems
German:
Betriebssystemkern
— (computing) central part of many computer operating systems
German:
Kernel
— (computing) central part of many computer operating systems
Greek:
πυρήνας
(pyrínas)
— (computing) central part of many computer operating systems
Icelandic:
kjarni
— (computing) central part of many computer operating systems
Icelandic:
stýrikjarni
— (computing) central part of many computer operating systems
Indonesian:
kernel
— (computing) central part of many computer operating systems
Italian:
kernel
— (computing) central part of many computer operating systems
Japanese:
カーネル
(kāneru)
— (computing) central part of many computer operating systems
Korean:
커널
(keoneol)
— (computing) central part of many computer operating systems
Kyrgyz:
өзөк
(özök)
— (computing) central part of many computer operating systems
Kyrgyz:
дан
(dan)
— (computing) central part of many computer operating systems
Macedonian:
јадро
(jadro)
— (computing) central part of many computer operating systems
Malay:
inti
— (computing) central part of many computer operating systems
Polish:
jądro
— (computing) central part of many computer operating systems
Polish:
jajko
— (computing) central part of many computer operating systems
Portuguese:
kernel
— (computing) central part of many computer operating systems
Portuguese:
núcleo
— (computing) central part of many computer operating systems
Russian:
ядро́
(jadró)
— (computing) central part of many computer operating systems
Spanish:
núcleo
— (computing) central part of many computer operating systems
Spanish:
granelo
— (computing) central part of many computer operating systems
Swedish:
operativsystemkärna
— (computing) central part of many computer operating systems
Swedish:
kärna
— (computing) central part of many computer operating systems
Turkish:
çekirdek
— (computing) central part of many computer operating systems
Vietnamese:
nhân
— (computing) central part of many computer operating systems
Bulgarian:
ядро
(jadro)
— (mathematics, algebra) set of elements mapped to zero
Czech:
jádro
— (mathematics, algebra) set of elements mapped to zero
Danish:
kerne
— (mathematics, algebra) set of elements mapped to zero
Dutch:
kern
— (mathematics, algebra) set of elements mapped to zero
Finnish:
nolla-avaruus
— (mathematics, algebra) set of elements mapped to zero
Finnish:
ydin
— (mathematics, algebra) set of elements mapped to zero
French:
noyau
— (mathematics, algebra) set of elements mapped to zero
German:
Kern
— (mathematics, algebra) set of elements mapped to zero
Greek:
πυρήνας
(pyrínas)
— (mathematics, algebra) set of elements mapped to zero
Hungarian:
mag
— (mathematics, algebra) set of elements mapped to zero
Italian:
nucleo
— (mathematics, algebra) set of elements mapped to zero
Polish:
jądro
— (mathematics, algebra) set of elements mapped to zero
Portuguese:
núcleo
— (mathematics, algebra) set of elements mapped to zero
Russian:
ядро́
(jadró)
— (mathematics, algebra) set of elements mapped to zero
Spanish:
núcleo
— (mathematics, algebra) set of elements mapped to zero
Finnish:
ydin
— (mathematics, fuzzy set theory) Set of members of a fuzzy set that are fully included