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guinea pig

noun

Definition of guinea pig

1 :a small stout-bodied short-eared tailless domesticated rodent (Cavia porcellus) of South American origin often kept as a pet and widely used in biological research — called also cavy
2 :a subject of research, experimentation, or testing

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Examples of guinea pig in a Sentence

  1. He volunteered to act as a guinea pig in the experiment.

First Known Use of guinea pig

1664

GUINEA PIG Defined for English Language Learners

guinea pig

noun

Definition of guinea pig for English Language Learners

  • : a small animal that is often kept as a pet

  • : a person or thing used for testing something

GUINEA PIG Defined for Kids

guinea pig

noun

Definition of guinea pig for Students

:a small stocky South American animal that is a rodent with short ears and a very short tail and is often kept as a pet

Medical Dictionary

guinea pig

noun guin·ea pig \ ˈgin-ē-ˌ \

medical Definition of guinea pig

:a small stout-bodied short-eared nearly tailless domesticated rodent of the genus Cavia (C. cobaya) often kept as a pet and widely used in biological research — called also cavy

Learn More about guinea pig

  1. See words that rhyme with guinea pig Spanish Central: Translation of guinea pig Nglish: Translation of guinea pig for Spanish speakers Britannica.com: Encyclopedia article about guinea pig

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Examples: guinea pig in a Sentence