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amnia

 - 6 dictionary results

am⋅ni⋅on

[am-nee-uhn]
–noun, plural -ni⋅ons, -ni⋅a [-nee-uh] .
1. Anatomy, Zoology. the innermost of the embryonic or fetal membranes of reptiles, birds, and mammals; the sac in which the embryo is suspended.
2. Zoology. a similar membrane of insects and other invertebrates.

Origin:
1660–70; < Gk, equiv. to amn(ós) lamb (see yean ) + -ion dim. suffix
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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am·ni·a   (ām'nē-ə)   
n.  A plural of amnion.
am·ni·on   (ām'nē-ən, -ŏn')   
n.   pl. am·ni·ons or am·ni·a (-nē-ə)
A thin, tough, membranous sac that encloses the embryo or fetus of a mammal, bird, or reptile. It is filled with a serous fluid in which the embryo is suspended.

[Greek amniōn.]
am'ni·ot'ic (-ŏt'ĭk), am'ni·on'ic (-ŏn'ĭk) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: am·ni·on
Pronunciation: 'am-nE-"än, -&n
Function: noun
Inflected Form: plural amnions or am·nia /-nE-&/
: a thin membrane forming a closed sac about the embryos of reptiles, birds, and mammals and containing a serous fluid in which the embryo isimmersed called also amniotic sac
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

amnion am·ni·on (ām'nē-ən, -ŏn')
n. am·ni·ons or am·ni·a (-nē-ə)
The thin, membranous sac filled with a serous fluid in which the embryo or fetus is enclosed and suspended in the uterus. Also called amniotic sac.


am'ni·ot'ic (-ŏt'ĭk) or am'ni·on'ic (-ŏn'ĭk) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
amnion   (ām'nē-ən)  Pronunciation Key 
A thin, membranous sac filled with a watery fluid (called the amniotic fluid) in which the embryo or fetus of a reptile, bird, or mammal is suspended during prenatal development. Also called amniotic sac.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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