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cortex

cor·tex [ káwr tèks ] (plural cor·ti·ces [ káwrti sz ] or cor·tex·es)

noun

Definition:

1. outer layer of body part: the outer layer of a solid organ or part of the body, e.g. the outer covering of the kidney or brain cerebral cortex

2. tissue layer: the tissue in plant stems and roots between the outer layer epidermis and the central core stele

[Mid-17th century. < Latin, "bark"]

cor·ti·cal [ káwrtik'l ] adjective

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