cortex.
The outer layer of an internal organ or body structure, such as the kidney or the brain.
Meaning & usage
The outer layer of an internal organ or body structure, such as the kidney or the brain.
The tissue of a stem or root that lies inward from the epidermis, but exterior to the vascular tissue.
The outer surface of a piece of flint.
Where this word comes from
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”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.