urochord
英[\'jʊərəkɔ:d]
美[\'jʊrəˌkɔd]
基本释义
- n.
- 尾索（尾索类动物的脊索只存在于尾部的一段）
英英释义
Noun
1. primitive marine animal having a saclike unsegmented body and a urochord (a notochord) conspicuous in the larva
2. a notochord of a larval tunicate typically confined to the caudal region