ornithischian

or·nith·is·chi·an

 (ôr′nə-thĭs′kē-ən)

n.

Any of various herbivorous dinosaurs of the order Ornithischia, having a pubic bone that points down and backward like that of modern birds, usually a horny beak or bill, and including the hadrosaurs and stegosaurs.

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[From New Latin Ornīthischia, order name : ornith(o)- + Greek iskhion, hip joint.]

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or′nith·is′chi·an adj.

ornithischian

(ˌɔːnɪˈθɪskɪən)

adj

(Palaeontology) of, relating to, or belonging to the Ornithischia, an order of dinosaurs that included the ornithopods, stegosaurs, ankylosaurs, and triceratops

n

(Palaeontology) any dinosaur of the order Ornithischia; a bird-hipped dinosaur

[C20: from ornitho- + Greek ischion hip joint]

or•nith•is•chi•an

(ˌɔr nəˈθɪs ki ən)

n.

1. any herbivorous dinosaur of the order Ornithischia, in which the pelvic structure resembles that of birds. Compare saurischian.

adj.

2. belonging or pertaining to the Ornithischia.

[1900–05; < New Latin Ornithischi(a) < Greek ischium]

or·nith·is·chi·an

(ôr′nə-thĭs′kē-ən)

One of the two main types of dinosaurs. Ornithischians have a pelvis similar to that of modern birds, and include all the plant-eating dinosaurs except the sauropods. They include armor-plated, horned, and duck-billed varieties. Compare saurischian.

Thesaurus

Noun

1.

ornithischian - herbivorous dinosaur with a pelvis like that of a bird ornithischian dinosaur dinosaur - any of numerous extinct terrestrial reptiles of the Mesozoic era order Ornithischia, Ornithischia - extinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods) pisanosaur, pisanosaurus - primitive dinosaur found in Argentina staurikosaur, staurikosaurus - primitive dinosaur found in Brazil armored dinosaur - dinosaurs having bony armour bone-headed dinosaur - bipedal herbivorous dinosaurs with bony crowns ceratopsian, horned dinosaur - any of several four-footed herbivorous dinosaurs with enormous beaked skulls; of the late Cretaceous in North America and Mongolia ornithopod, ornithopod dinosaur - bipedal herbivorous dinosaur duck-billed dinosaur, hadrosaur, hadrosaurus - any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic