n.
Pronunciation: m ə - ' d ə -l ə
Function: noun
Inflected Form: plural -las or -lae \ -( ˌ )l ē , - ˌ l ī \
Etymology: Middle English, from L
Date: 15th century
1 plural medullae a : BONE MARROW b : MEDULLA OBLONGATA
2 a : the inner or deep part of an animal or plant structure <the adrenal medulla > b : MYELIN SHEATH