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| bra·chi·o·sau·rus [ bràykee ə sáwrəss, bràkee ə sáwrəss ] (plural bra·chi·o·sau·rus·es or bra·chi·o·sau·ri [ bràkee ə sáw r ]) or bra·chi·o·saur [ bráykee ə sàwr, brákee ə sàwr ] (plural bra·chi·o·saurs) |
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| Definition: |
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large dinosaur: a dinosaur with a massive sloping body up to 30 m (100 ft) long. Genus Brachiosaurus.
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| [Early 20th century. < modern Latin< Latin brachium (see brachium) (from the unusual length of the animal's humerus bones) + Greek sauros "lizard"] |
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