Megalosaur \Meg"a*lo*saur`\, Megalosaurus \Meg`a*lo*sau"rus\, n. [NL. megalosaurus, fr. Gr. ?, ?, great + ? lizard: cf. F. m['e]galosaure.]

(Paleon.) A gigantic carnivorous dinosaur, whose fossil remains have been found in England and elsewhere.

Source: Webster's Revised Unabridged Dictionary (1913)