amniotic sac
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See amnion.
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Words nearby amniotic sac
amniography, amnion, amniote, amniotic, amniotic fluid, amniotic sac, amn't, amobarbital, “A Modest Proposal”, amoeba, amoebaean
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for amniotic sac
amniotic sac
A two-layered membrane that surrounds the embryo or fetus in the uterus. The amniotic sac is filled with fluid in which the embryo or fetus is suspended. (See reproductive systems.)
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.