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See more synonyms for maiasaur on Thesaurus.com
  1. a large hadrosaur, Maiasaura peeblesorum, that is thought to have cared for its young.
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Also mai·a·saur·a [mahy-uh-sawr-uh] /ˌmaɪ əˈsɔr ə/.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

maiasaur in Science


  1. A duck-billed dinosaur of the genus Maiasaura of the late Cretaceous Period of North America. Its remains suggest that the adults lived in herds and cared for their young in large nesting sites.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.