C-sec·tion (s??s?k?sh?n)n. A cesarean section.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.ce?sar?e?an (s??z??r i ?n) n. 1. (sometimes cap.) Also called cesar?ean sec`tion. an operation by which a fetus is taken from the uterus by cutting through the walls of the abdomen and uterus. adj. 2. (sometimes cap.) of or pertaining to a cesarean. Also, caesarean , ce?sar?i?an. [1900?05] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.