(Zoology)a reptile of a large group characterized by the presence of two temporal openings in the skull, including the lizards, snakes, crocodiles, dinosaurs, and pterosaurs (动)无孔类爬行动物
Subclass Anapsida 无孔亚纲
语源
early 20th cent.: from modern Latin Diapsida, from di- 'two' + Greek apsis, apsid- 'arch'