medullas
📖 中文释义
- n. 髓, 髓鞘, 髓质
🔗 释义中的汉语词
📘 English Definition（英文释义）
- n a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers
- n lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata)
- n the inner part of an organ or structure in plant or animal