noun
coextensive with the subclass Prototheria
• Syn: ↑order Monotremata
• Hypernyms: ↑animal order
• Member Holonyms: ↑Prototheria, ↑subclass Prototheria
• Member Meronyms: ↑Tachyglossidae, ↑family Tachyglossidae, ↑Ornithorhynchidae, ↑family Ornithorhynchidae
Useful english dictionary. 2012.