Dictionary

cortex

noun cor·tex \ˈkr-ˌteks\

medical : the outer layer of an organ in the body and especially of the brain

plural cor·ti·ces \ˈkr-tə-ˌsēz\ or cor·tex·es

Full Definition of CORTEX

1
a (1) :  the outer or superficial part of an organ or bodily structure (as the kidney, adrenal gland, or cerebellum or a bone); especially :  cerebral cortex (2) :  the proteinaceous usually pigmented layer of a hair below the cuticle
b :  the outer part of some organisms (as paramecia)
2
:  a plant bark or rind (as cinchona) used medicinally
3
a :  the typically parenchymatous layer of tissue external to the vascular tissue and internal to the corky or epidermal tissues of a green plant; broadly :  all tissues external to the xylem
b :  an outer or investing layer of various algae, lichens, or fungi
ADVERTISEMENT

Origin of CORTEX

Latin cortic-, cortex bark — more at cuirass
First Known Use: 1677
Medical Dictionary

cortex

noun cor·tex \ˈkr-ˌteks\
plural cor·ti·ces \ˈkrt-ə-ˌsēz\ or cor·tex·es

Medical Definition of CORTEX

1
a :  the outer or superficial part of an organ or body structure (as the kidney, adrenal gland, or a hair); especially :  cerebral cortex b :  the outer part of some organisms (as paramecia)
2
a :  a plant bark or rind (as cinchona) used medicinally b :  the peel of any of several fruits—used especially in the writing of medical prescriptions

Illustration of CORTEX

Browse

Next Word in the Dictionary: cortezPrevious Word in the Dictionary: cortegeAll Words Near: cortex
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears