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- Dictionaryguin·ea pig/ˈɡinē ˌpiɡ/
noun
- 1. a tailless South American rodent of the cavy family. Originally raised for food, it no longer occurs in the wild and is now typically kept as a pet or for laboratory research.
- 2. a person or thing used as a subject for experiment: "we were used as guinea pigs to test the effects of radiation on human beings"
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