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medulla

me·dulla

UK/məˈdʌlə/ US/mɛˈdʌlə/ uncommon

noun

1.

a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers

Synonyms
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”
Synonyms
3.

the inner part of an organ or structure in plant or animal

Antonyms

Origin

Borrowed from Latin medulla (“pith, marrow”), perhaps from medius (“middle”).

Phrases

  • medulla oblongata
  • medulla spinalis
  • renal medulla

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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.