/ Dictionary / Index T typhoidin: Meaning and Definition of Find definitions for: ty•phoi•din Pronunciation: (tī-foi'din), [key] — n. Med. a culture of dead typhoid bacilli used by cutaneous inoculation to detect the presence of a typhoid infection. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. typhoid bacillus Typhoid Mary Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language