Definition of apatosaur in English:

Share this entry


Pronunciation: /əˈpatōsôr/
(also apatosaurus /ˌapətōˈsôrəs/)


A huge herbivorous dinosaur of the late Jurassic period, with a long neck and tail. Also called brontosaur.
  • Genus Apatosaurus (popularly Brontosaurus), infraorder Sauropoda, order Saurischia.
Example sentences
  • As Christians who reject evolutionary theory, the family scoffed at the park's dinosaur attractions, which date the apatosaurus, brachiosaurus and the like to prehistoric times.
  • He said continuing research into the species is important because of larger evolutionary questions, including their relationship to the much larger sauropod dinosaurs, including brachiousaurus and apatosaurus.
  • And one of the marvelous things God described to Job sounds very much like an apatosaurus.





Modern Latin, from Greek apatē 'deceit' + sauros 'lizard'.

For editors and proofreaders

Syllabification: a·pa·to·saur

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.