Definition of Medula
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.
- Webster's Unabridged Dictionary (1913)
- the soft inner part of something, especially the pith of a fruit
- (Anatomy) the inner substance of various organs and structures, especially the marrow of bones
- (Botany) the internal tissue of a plant
- The Nuttall Encyclopedia
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