Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
(Zoology) zoology an S-shaped curve, as in the necks of certain birds
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
1. an S-shaped curve in a body part.
2. Also called sig′moid co′lon. the S-shaped curve of the large intestine where the descending colon joins the rectum in humans.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Switch to new thesaurus
|Noun||1.||sigmoid flexure - the s-shaped curve between the descending colon and the rectum|
large intestine - beginning with the cecum and ending with the rectum; includes the cecum and the colon and the rectum; extracts moisture from food residues which are later excreted as feces
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.