• synonyms


adjective Anatomy, Zoology.
  1. of, relating to, or having an amnion.
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Also am·ni·on·ic [am-nee-on-ik] /ˌæm niˈɒn ɪk/, am·nic [am-nik] /ˈæm nɪk/.

Origin of amniotic

First recorded in 1815–25; amni(on) + -otic
Related formspost·am·ni·ot·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of amniotic

British Dictionary definitions for amniotic


  1. of or relating to the amnion
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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

Word Origin and History for amniotic


1822, from Modern Latin amnion (see amnion) + -ic.

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Online Etymology Dictionary, © 2010 Douglas Harper