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amniote

[am-nee-oht]
noun
  1. any vertebrate of the group Amniota, comprising the reptiles, birds, and mammals, characterized by having an amnion during the embryonic stage.
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Compare anamniote.

Origin of amniote

< New Latin amniota; see amnion, -ote
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for amniote

amniote

noun
  1. any vertebrate animal, such as a reptile, bird, or mammal, that possesses an amnion, chorion, and allantois during embryonic developmentCompare anamniote
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

amniote in Science

amniote

[ămnē-ōt′]
  1. Any of the vertebrates that have an amnion during embryonic development. Reptiles, birds, and mammals are amniotes.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.