To inhabit or overrun in numbers or quantities large enough to be harmful, threatening, or obnoxious: rats infesting the sewers; streets that were infested with drugs.
To live as a parasite in or on: livestock that were infested with tapeworms.
[Middle English infesten, to distress, from Old French infester, from Latin īnfestāre, from īnfestus, hostile; see gwhedh- in Indo-European roots.] in'fes·ta'tion n., in·fest'er n.
Main Entry: in·fes·ta·tion Pronunciation: "in-"fes-'tA-sh&n Function: noun 1: the act of infesting something 2: something that infests 3: the state of being infested especially with metazoan ectoparasites