/ Thesaurus / S Synonyms of sigmoidectomy Find synonyms for: Noun1. sigmoidectomy, ablation, extirpation, cutting out, excisionusage: surgical removal of part or all of the sigmoid colon (usually to remove a malignant tumor)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language