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Dictionary

am•ni•on

Pronunciation: (am'nē-un), [key]
—n.,
—pl. -ni•ons, -ni•aPronunciation: (-nē-u). [key]
1. Anat., Zool.the innermost of the embryonic or fetal membranes of reptiles, birds, and mammals; the sac in which the embryo is suspended.
2. Zool.a similar membrane of insects and other invertebrates.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

amniography

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