English dictionary



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English noun: medulla

1. medulla (substance) a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers


Synonymsmyelin, myeline


Broader (hypernym)fat


Substance meronymmedullary sheath, myelin sheath

2. medulla (body) lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata)


SamplesThe medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning.


Synonymsbulb, medulla oblongata


Broader (hypernym)neural structure


Part holonymrespiratory center


Part meronymbrain stem, brain-stem, brainstem

3. medulla (body) the inner part of an organ or structure in plant or animal


Broader (hypernym)animal tissue, plant tissue


Narrower (hyponym)adrenal medulla


Antonymscortex









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