guinea pig Meaning, Definition & Usage

  1. noun a person who is subjected to experimental or other observational procedures; someone who is an object of investigation
    case; subject.
    • the subjects for this investigation were selected randomly
    • the cases that we studied were drawn from two different communities
  2. noun stout-bodied nearly tailless domesticated cavy; often kept as a pet and widely used in research
    Cavia cobaya.

WordNet