medulla
/meˈdʌlə/noun
1- Anatomy the inner region of an organ or tissue, especially when it is distinguishable from the outer region or cortex (as in a kidney, an adrenal gland, or hair)【剖】髓质。
1.1
- short for MEDULLA OBLONGATA.
1.2
- mass noun Botany the soft internal tissue or pith of a plant【植】髓, 髓部。
派生词
medullary
adjective词源
late Middle English （in the sense 'bone marrow'）： from Latin, 'pith or marrow'.