monotreme

名词 n. 形容词 adj.
中文释义

英文释义

名词 n.
  1. Any of the order Monotremata of mammals that lay eggs and have single orifices for urogenital and digestive functions (cloaca); an echidna, platypus or one of their extinct relatives.
形容词 adj.
  1. Having a single trema, or aperture. not-comparable
    — Nomotreme fern and moss spores are monotreme.

词形变化

monotremes plural

词源

词源 1
From mono- (“one”) + -treme (“hole”).
词源 2
From mono- (“one”) + -treme (“hole”).
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