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Petrichor: The smell after rainfall

sigmoid vein

sigmoid vein in Medicine

sigmoid vein n.
Any of the tributaries of the inferior mesenteric vein that drain the sigmoid colon.

The American HeritageĀ® Stedman's Medical Dictionary
Copyright Ā© 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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