cortex

play
noun cor·tex \ˈkȯr-ˌteks\

Definition of cortex

plural

cortices

play \ˈkȯr-tə-ˌsēz\ or

cortexes

  1. 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. 2 :  a plant bark or rind (as cinchona) used medicinally

  3. 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

Origin and Etymology of cortex

Latin cortic-, cortex bark — more at cuirass


First Known Use: 1677


CORTEX Defined for English Language Learners

cortex

play
noun cor·tex \ˈkȯr-ˌteks\

Definition of cortex for English Language Learners

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


Medical Dictionary

cortex

play
noun cor·tex \ˈkȯr-ˌteks\

Medical Definition of cortex

plural

cortices

\ˈkȯrt-ə-ˌsēz\play or

cortexes

  1. 1a:  the outer or superficial part of an organ or body structure (as the kidney, adrenal gland, or a hair); especially :  cerebral cortexb:  the outer part of some organisms (as paramecia)

  2. 2a:  a plant bark or rind (as cinchona) used medicinallyb:  the peel of any of several fruits—used especially in the writing of medical prescriptions

Illustration of cortex



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