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 adjective or noun
(ˈ)dī¦apsədᵊn
Word History
Etymology
New Latin, from di- + -apsida (from Greek hapsid-, hapsis arch, loop)