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A large brachiosaurid dinosaur of the genus Brachiosaurus of the Jurassic Period, with the nostrils and eyes set high up on the head. Also called brachiosaur.
[New Latin Brāchiosaurus, genus name : Latin brācchium, arm; see brachium + Greek sauros, lizard.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Animals) a dinosaur of the genus Brachiosaurus, up to 30 metres long: the largest land animal ever known. See also sauropod
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
bra·chi·o·sau·rus(brā′kē-ə-sôr′əs) or bra·chi·o·saur (brā′kē-ə-sôr′)
Plural brachiosauri or brachiosaurs
A massive sauropod dinosaur of the Jurassic and Cretaceous Periods. It had forelegs that were longer than its hind legs, and nostrils on top of its head.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.