Hyper Dictionary

English Dictionary Computer Dictionary Video Dictionary Thesaurus Dream Dictionary Medical Dictionary

Search Dictionary:  

Meaning of MEDULLA

Pronunciation:  mi'dulu

WordNet Dictionary
  1. [n]  the inner part of an organ or structure in plant or animal
  2. [n]  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"
  3. [n]  a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers

MEDULLA is a 7 letter word that starts with M.


 Synonyms: bulb, medulla oblongata, myelin, myeline
 Antonyms: cortex
 See Also: adrenal medulla, animal tissue, fat, hindbrain, medullary sheath, myelin sheath, neural structure, plant tissue, respiratory center, rhombencephalon



Webster's 1913 Dictionary
\Me*dul"la\, n. [L.]
1. Marrow; pith; hence, essence. [Obs.] --Milton.

2. (Anat.) The marrow of bones; the deep or inner portion of
   an organ or part; as, the medulla, or medullary substance,
   of the kidney; specifically, the medula oblongata.

3. (Bot.) A soft tissue, occupying the center of the stem or
   branch of a plant; pith.

{Medulla oblongata}. [L., oblong medulla] (Anat.), the
   posterior part of the brain connected with the spinal
   cord. It includes all the hindbrain except the cerebellum
   and pons, and from it a large part of the cranial nerves
   arise. It controls very largely respiration, circulation,
   swallowing, and other functions, and is the most vital
   part of the brain; -- called also {bulb of the spinal
   cord}. See {Brain}.

Medical Dictionary
 Definition: Central area of an organ, gland or bone.