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Noun: guinea pig
  1. A person who is subjected to experimental or other observational procedures; someone who is an object of investigation
    - subject, case
  2. Stout-bodied nearly tailless domesticated cavy; often kept as a pet and widely used in research
    - Cavia cobaya

Derived forms: guinea pigs

Type of: cavy, individual, mortal, person, somebody, someone, soul

Encyclopedia: Guinea pig