monotreme
Pronunciation:
/ˈmɒnətɹiːm/noun
Definitions
A mammal that lays eggs and has a single urogenital and digestive orifice. Only the echidnas and platypuses are included in this group
adjective
Definitions
(of a pollen grain) Having a single trema, or aperture.
Synonyms:1-trememonoaperturate