/ Dictionary / Index P pullorum disease: Meaning and Definition of Find definitions for: pul•lo'rum disease" Pronunciation: (pu-lôr'um, -lōr'-), [key] — Vet. Pathol. Vet. Pathol. a highly contagious, frequently fatal disease of young poultry caused by the bacterium Salmonella gallinarum (pullorum), transmitted by the infected hen during egg production, and characterized by weakness, loss of appetite, and diarrhea. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pull-on pullout Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language