The Collaborative International Dictionary of English v.0.48:
Ornithorhynchidae \Ornithorhynchidae\ prop. n.
The natural family of monotremes including the platypus
(duckbill) (Ornithorhyncus anatinus).
Syn: family Ornithorhynchidae.
[WordNet 1.5]
The Collaborative International Dictionary of English v.0.48:
Ornithorhynchus \Or`ni*tho*rhyn"chus\, prop. n. [NL., fr. Gr.
'o`rnis, 'o`rniqos, a bird + ? snout, beak.] (Zool.)
A genus of monotremes including the platypus (Ornithorhyncus
anatinus). See Duck mole, under Duck.
[1913 Webster]