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| a·pa·to·saur·us [ ə pàttə sáwrəss ] (plural a·pa·to·saur·us·es) or a·pa·to·saur [ ə páttə sàwr ] (plural a·pa·to·saurs) |
noun |
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| Definition: |
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long-necked dinosaur: a large plant-eating dinosaur that lived in North America during the Jurassic period and had a small head, short front legs, and a long neck and tail. Genus Apatosaurus.
Former name brontosaurus
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| [Late 19th century. < modern Latin< Greek apatē "deceit" + sauros "lizard"] |
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