a massive herbivorous long-tailed bipedal dinosaur of the genus Iguanodon, common in Europe and N Africa in Jurassic and Cretaceous times: suborder Ornithopoda (ornithopods)
Word origin
C19: New Latin, from iguana + Greek odōn tooth
iguanodon in American English
(ɪˈgwænəˌdɑn; iˈgwænəˌdɑn)
noun
any of a genus (Iguanodon) of very large, vegetarian, two-footed ornithopod dinosaurs