Diapsida

plural noun

Di·​ap·​si·​da

dīˈapsədə

in some classifications

: a subclass of reptiles having two pairs of temporal openings in the skull and including the extinct dinosaurs and pterosaurs, the crocodiles and rhynchocephalians, and usually the lizards and snakes compare parapsida

diapsidan

(ˈ)dī¦apsədᵊn

adjective or noun

Word History

Etymology

New Latin, from di- + -apsida (from Greek hapsid-, hapsis arch, loop)

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