medulla
me·dul·la
noun \mə-ˈdə-lə\ plural me·dul·las or me·dul·lae\-(ˌ)lē, -ˌlī\
Definition of MEDULLA
1
2
a : the inner or deep part of an animal or plant structure <the adrenal medulla> b : myelin sheath
See Origin of MEDULLA
Middle English, from Latin
First Known Use: 15th century
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