English

Noun

monotreme ‎(plural monotremes)

Ventral view of a female echidna, a monotreme, showing single orifice.

1. (zoology) A mammal that lays eggs and has a single urogenital and digestive orifice. Only the echidnas and platypuses are included in this group.

Translations

Derived terms

• monotrematous

Related terms

• trema
• Monotremata
• monotrematic

Adjective

monotreme ‎(not comparable)

1. (palynology, of a pollen grain) Having a single trema, or aperture.
   • 1952, G. Erdtman, Pollen Morphology and Plant Taxonomy, published 1986, ISBN 9004081224, page 548:

     Nomotreme fern and moss spores are monotreme.

Synonyms

• 1-treme
• monoaperturate

Related terms

• trema
• anatreme
• catatreme
• nomotreme
• pantotreme
• zonotreme

Anagrams

• metronome, monometer