Definition of ankylosaur in English:

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Pronunciation: /ˈaNGkiləˌsôr/
(also ankylosaurus /ˌaNGkiləˈsôrəs/)


A heavily built quadrupedal herbivorous dinosaur primarily of the Cretaceous period, armored with bony plates.
  • Infraorder Ankylosauria, order Ornithischia: several genera, in particular Ankylosaurus.
Example sentences
  • The ankylosaurs were heavily armoured dinosaurs, 2 to 10 meters long, quadrupedal, slow moving, and fed on swampy soft vegetation.
  • Skeletons range from twelve-foot remains of the armored dinosaurs known as ankylosaurs, with almost every piece of bony plate intact, to two-inch skeletons of early mammals, complete down to their fragile, microscopic ear bones.
  • These were the fragmentary remains of an armored dinosaur, an ankylosaur.



Example sentences
  • Most recently, a new ankylosaur was named on the basis of an incomplete mandible and fragmentary cranial material, but the ankylosaurian affinities and validity of this taxon are doubtful.
  • This is the first description of ostoederms and ankylosaurian material from Coahuila.
  • Dr Barrett has been reviewing remains of ankylosaurian dinosaurs found around Trumpington, Haslingfield, Bottisham, Reach and Burwell.


Early 20th century: from modern Latin Ankylosaurus, from Greek ankulos (see ankylosis) + sauros 'lizard'.

For editors and proofreaders

Syllabification: an·ky·lo·saur

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