rudist

名词 n.
中文释义

英文释义

名词 n.
  1. Any of many box-, tube- or ring-shaped marine heterodont bivalves from the Jurassic and Cretaceous periods.
    — In its shallow waters, now-extinct clams known as rudists formed extensive beds.

词形变化

rudists plural

词源

From French rudistes (plural), from rude (“rough, uneven”), or its source, Latin rudis. Compare scientific Latin Rudista.
2 次浏览 数据来源: Wiktionary