epizootiology

[ĕp′ĭ-zō-ŏt′ē-ŏlə-jē]
n.
  1. The science dealing with the character, ecology, and causes of diseases in animals, especially epizootic diseases.
  2. The sum of the factors controlling the presence of a disease in an animal population.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.