bivium

[动]二道体区

词形变化

bivia 复数 bivia

释义与例句

n.
  1. 1.

    One side of an echinoderm, including a pair of ambulacra, in distinction from the opposite side (trivium), which includes three ambulacra.

    生物 动物学

词源

From Latin bivium (“a place with two ways”).

来源：wiktionary