Search Dictionary
Definition of cortex

cortex

/ˈkɔːr.tɛks/
cor · tex

Adverb:cortically
•
Plural:cortices
•
Adjective:cortical
JUMP TO:

cortex Lexical Profile

cortex Game Scores & Validity

• noun

1

The outer layer of an internal organ or body structure, such as the kidney (renal cortex) or the brain (cerebral cortex), typically distinguished from the inner substance.

Example

"The cerebral cortex plays a crucial role in complex cognitive tasks, including memory, attention, perception, and thought."


2

The specialized region of unspecialized tissue in a plant stem or root lying between the epidermis and the central vascular cylinder.

Example

"In many herbaceous plants, the root cortex acts as a storage site for starch and helps transport water into the vascular core."

Word Nuance & Usage

In scientific and medical literature, the plural is usually formed with the Latinate 'cortices', though the regular English plural 'cortexes' is also widely accepted.

• Rhymes for cortex

Word Origin & Etymology

Borrowed directly into English in the late 14th century from Latin 'cortex', meaning 'bark', 'rind', or 'shell', applied metaphorically to the outer layer of anatomical structures.

Cite this Entry


Wordmom. (2026). Definition of Cortex. In Wordmom Dictionary. Retrieved Oct 15, 2026, from https://wordmom.com/dictionary/cortex
Wordmom is your complete guide to the English language. Whether you're looking up a definition, searching for the perfect synonym, or unscrambling letters for a word game, our comprehensive suite of tools is designed to help you find the right word, every time.
Dictionary & Reference
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE®, Words With Friends®, Wordle®, and related game titles or tournament codes are registered trademarks of their respective owners (including Hasbro, Mattel, Zynga, The New York Times, NASPA, and WESPA). Wordmom is an independent reference utility for educational and entertainment purposes, not affiliated with, sponsored, or endorsed by these entities. All game names are referenced strictly under nominative fair use for compatibility.