prostomium

n. [动]口前叶

词形变化

prostomia 复数 prostomia

别名

prostonium

释义与例句

n.
  1. 1.

    The portion of the head of an annelid situated in front of the mouth.

    生物 动物学

词源

From Ancient Greek, meaning "before the mouth".

来源：wiktionary