/ Dictionary / Index C clostridium: Meaning and Definition of Find definitions for: clos•trid•i•um Pronunciation: (klo-strid'ē-um), [key] — pl. clos•trid•i•a any of several rod-shaped, spore-forming, anaerobic bacteria of the genus Clostridium, found in soil and in the intestinal tract of humans and animals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: clostridium (Thesaurus) closing price closure Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language