thecodont dentition槽牙系;槽齿系
thecodont teeth槽生齿
ADJ(形容词) (of mammals and certain reptiles) having teeth that grow in sockets (哺乳动物和某些爬行动物)有槽齿的
N(名词) any extinct reptile of the order Thecodontia, of Triassic times, having teeth set in sockets: they gave rise to the dinosaurs, crocodiles, pterodactyls, and birds (三叠纪)槽齿目爬行动物