prototherian

a. 原兽亚纲的

发音

/ˌpɹoʊtɵˈθɪəɹi.ən/

词形变化

prototherians 复数 prototherians more prototherian 比较级 most prototherian 最高级

释义与例句

n.
  1. 1.

    Any of the egg-laying mammals of the subclass Prototheria; a monotreme.

adj.
  1. 1.

    Belonging or pertaining to the subclass Prototheria.

    […]the modern remaining prototherian lines are the Australian and New Guinean monotremes, egg-laying mammals now represented by the grub- and shrimp-eating platypus (Ornithorhyncus) and ant-eating echidna (Tachyglossus and Zaglossus).

词汇关系

名词

上位词 2

mammal mammalian

下位词 1

monotreme

词源

From translingual Prototheria + -an, from Ancient Greek πρωτο- (prōto-, “proto-, first”) + θηρίον (thēríon, “beast”).

来源：wiktionary