ChiropteraPronunciation: /kʌɪˈrɒpt(ə)rə/Definition of Chiroptera noun Zoology an order of mammals that comprises the bats. See also Megachiroptera, Microchiroptera.Origin:modern Latin (plural), from chiro- 'hand' + Greek pteron 'wing'Chiroptera in other Oxford dictionaries Definition of Chiroptera in the US English dictionary