noun · 6 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.
General-American:/ˈkɔɹtɛks/
Received-Pronunciation:/ˈkɔːtɛks/
Southern-England:Recorded audio is listed in the source snapshot.
rhymes with -ɔɹtɛks
CMU ARPABET:K AO1 R T EH0 K S
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
The outer layer of an internal organ or body structure, such as the kidney or the brain.
Definition source: English Wiktionary via Wiktextract
Usage: countable
Topics: anatomy, medicine, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
The tissue of a stem or root that lies inward from the epidermis, but exterior to the vascular tissue.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
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
The outer surface of a piece of flint.
Definition source: English Wiktionary via Wiktextract
the tissue forming the outer layer of an organ or structure in plant or animal
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: medulla
Broader terms: animal tissue, plant tissue
Narrower terms: adrenal cortex, renal cortex
History
Etymology
Etymology tree Proto-Indo-European *(s)ker- Proto-Indo-European *(s)kert- Proto-Indo-European *(s)kort-ek-sder. Latin cortexbor. English cortex Borrowed from Latin cortex (“cork, bark”).
Across languages
Translations
33 source translations are retained for this English entry.
Bashkir:
ҡабыҡ
(qabıq)
— outer layer of an internal organ or body structure
Bulgarian:
ципа
(cipa)
— outer layer of an internal organ or body structure
Catalan:
còrtex
— outer layer of an internal organ or body structure
Chinese Mandarin:
皮质
(pízhì)
— outer layer of an internal organ or body structure
Czech:
kůra
— outer layer of an internal organ or body structure
Finnish:
kuori
— outer layer of an internal organ or body structure
French:
cortex
— outer layer of an internal organ or body structure
German:
Rinde
— outer layer of an internal organ or body structure
German:
Cortex
— outer layer of an internal organ or body structure
German:
Kortex
— outer layer of an internal organ or body structure
Greek:
φλοιός
(floiós)
— outer layer of an internal organ or body structure
Hungarian:
kéreg
— outer layer of an internal organ or body structure
Ido:
kortico
— outer layer of an internal organ or body structure
Irish:
coirtéis
— outer layer of an internal organ or body structure
Khmer:
សំបក
(sɑmbɑɑk)
— outer layer of an internal organ or body structure
Korean:
피질
(pijil)
— outer layer of an internal organ or body structure
Northern Kurdish:
tûkil
— outer layer of an internal organ or body structure
Norwegian Bokmål:
bark
— outer layer of an internal organ or body structure
Norwegian Nynorsk:
bork
— outer layer of an internal organ or body structure
Polish:
kora
— outer layer of an internal organ or body structure
Portuguese:
córtex
— outer layer of an internal organ or body structure
Russian:
кора
(kora)
— outer layer of an internal organ or body structure
Thai:
เปลือก
(bplʉ̀ʉak)
— outer layer of an internal organ or body structure
Welsh:
breithell
— outer layer of an internal organ or body structure
Welsh:
gwisg
— outer layer of an internal organ or body structure
Bulgarian:
кора
(kora)
— tissue of a stem or root
French:
cortex
— tissue of a stem or root
Hungarian:
kéreg
— tissue of a stem or root
Northern Kurdish:
tûkil
— tissue of a stem or root