| 释义 |
me·dul·la
\mə̇ˈdələ, meˈ-\ noun
(plural medullas \-ləz\ ; or medul·lae \-ˌlē\)
Etymology: Latin; perhaps akin to Old English smeoru, smeru fat, grease — more at smear
1. plural medullas, obsolete
a. : the essence or pith of a matter
b. : compendium, summary
2. plural medullae
a. : marrow of bone or spinal cord
b. [New Latin, from Latin] : medulla oblongata
3. [New Latin, from Latin]
a. : the inner or deep part of an organ or structure (as of a hair or kidney)
b. : the sheath of some nerve fibers
4. plural medullae : pith
5. [New Latin, from Latin]
a. : the medullary layer of lichens
b. : the inner spongy layer of some fungi
c. : the central core of elongate colorless cells of the thalli of some brown algae
6. [New Latin, from Latin] : the internal portion of some protozoans |