/ Dictionary / Index K klebsiella: Meaning and Definition of Find definitions for: kleb•si•el•la Pronunciation: (kleb"zē-el'u, klep"sē-), [key] — n. Bacteriol. any of several rod-shaped, aerobic bacteria of the genus Klebsiella, certain species of which, as K. pneumoniae, are found in the respiratory, intestinal, and genitourinary tracts of humans and animals and are sometimes pathogenic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: klebsiella (Thesaurus) Klebs Klebs-Löffler bacillus Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language