P0217000 (pĕ-stĭf′ər-əs)adj.1. a. Producing or breeding infectious disease.b. Infected with or contaminated by an epidemic disease.2. Morally evil or deadly; pernicious.3. Bothersome; annoying.[Middle English, from Latin pestiferus, variant of pestifer : pestis, pestilence; see pest + -fer, -fer.]pes·tif′er·ous·ly adv.pes·tif′er·ous·ness n. MedicalSeepestiferous