Found 1 items, similar to medullae.
English → English (WordNet) Definition: medullae medulla n 1: a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers [syn: myelin, myeline] 2: lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata); “the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning” [syn: medulla oblongata, bulb] 3: the inner part of an organ or structure in plant or animal [ant: cortex] [also: medullae (pl)] medullae See medulla