di·loph·o·saur·us 
(dī′lŏf′ə-sôrəs)
(dī′lŏf′ə-sôrəs)n.
A medium-sized carnivorous theropod dinosaur of the genus Dilophosaurus of the Jurassic Period, characterized by a pair of crests on the head.
[New Latin Dilophosaurus, genus name : Greek di-, two; see DI-1 + Greek lophos, crest of a helmet + Greek sauros, lizard.]