order ornithischia is a noun meaning "extinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)". It carries one recorded sense.
extinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)
Definitions, synonyms and semantic relations for order ornithischia come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.