amnion

amnion definition - medical

am·ni·on (ămˈnē-ən, -ŏnˌ)

noun pl. 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.

Related Forms:

  • amˌni·otˈic (-ŏtˈĭk), amˌni·onˈic (-ŏnˈĭk) adjective

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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