guinea pig
nounDefinition 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
Examples of guinea pig in a Sentence
He volunteered to act as a guinea pig in the experiment.
Recent Examples on the Web
But the star says being a guinea pig wasn’t always easy. — Janine Rubenstein, PEOPLE.com, "Kelly Clarkson Recalls How Season One of American Idol 'Wasn't Fun' in the Beginning," 29 Aug. 2019 Simrall said at the time that city officials never intended for Louisville to be a guinea pig or experiment. — Darcy Costello, The Courier-Journal, "Repairs underway on roads left damaged after Google Fiber's exit from Louisville," 28 Aug. 2019These example sentences are selected automatically from various online news sources to reflect current usage of the word 'guinea pig.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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More Definitions for guinea pig
guinea pig
nounEnglish Language Learners Definition of guinea pig
: a small animal that is often kept as a pet
: a person or thing used for testing something
See the full definition for guinea pig in the English Language Learners Dictionary
guinea pig
nounKids Definition of guinea pig
: 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
guinea pig
noun
guin·​ea pig
| \ ˈgin-ē-ˌ
\
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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
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