any of an order (Monotremata) of mammals, consisting of the platypus and the echidnas, which lay eggs and have a single opening for the digestive and urinary tracts and genital organs
Origin of monotremefrom Modern Latin Monotremata from Classical Greek monos, single (see mono-) + tr?ma, a hole from Indo-European base an unverified form ter-, to rub, drill from source throw
Any of various egg-laying mammals of the order Monotremata of Australia and New Guinea, whose only living members are the platypus and the echidnas.
Origin of monotremeFrom New Latin Monotrēmata order name mono- Greek trēma trēmat- perforation (from the fact that they have a single cloaca rather than an anus separate from genital and urinary orifices, as in placental mammals and marsupials) ; see terə-1 in Indo-European roots.
- (palynology, of a pollen grain) Having a single trema, or aperture
mono- +"Ž -treme