/ Dictionary / Index S shigella: Meaning and Definition of Find definitions for: shi•gel•la Pronunciation: (shi-gel'u), [key] — pl. -gel•lae -gel•las. any of several rod-shaped aerobic bacteria of the genus Shigella, certain species of which are pathogenic for humans and other warm-blooded animals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: shigella (Thesaurus) shifty shigellosis Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language