medulla

Definitions


[mɛˈdʌlə], (Noun)

Definitions:
- the inner region of an organ or tissue, especially when it is distinct from the outer region or cortex (as in a kidney, an adrenal gland, or hair)
(e.g: the adrenal medulla produces adrenaline)


Phrases:

Origin:
late Middle English (in the sense ‘bone marrow’): from Latin, ‘pith or marrow’




definition by Oxford Dictionaries