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Anatomy The abdomen.
(noun)
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Anatomy The prominent fleshy portion of a muscle.
(noun)
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Anatomy A cavity or hollowed surface, especially of a bone.
(noun)
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Zoology A part in lower forms of animal life corresponding to the abdomen of mammals.
(noun)
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Botany The swollen lower portion of an archegonium containing the egg.
(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.