/saw ris"kee euhn/ , n.
1. any herbivorous or carnivorous dinosaur of the order Saurischia, having a three-pronged pelvis resembling that of a crocodile. Cf. ornithischian .
adj.
2. belonging or pertaining to the Saurischia.
[ 1885-90; Saurischi ( a ) name of the order ( Saur ( ia ) (see -SAUR) + L -ischi ( um ) ISCHIUM + -a -A 1 ) + -AN ]