— ichthyosaurian , adj. , n. — ichthyosauroid , adj.
/ik"thee euh sawr'/ , n.
any fishlike marine reptile of the extinct order Ichthyosauria, ranging from 4 to 40 ft. (1.2 to 12 m) in length and having a round, tapering body, a large head, four paddlelike flippers, and a vertical caudal fin.
[ 1820-30; see ICHTHYOSAURUS ]