guinea pig
noun
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
Melissa concedes, agreeing to take in the guinea pig as long as Janine takes responsibility for caring for the animal.
—
Ile-Ife Okantah, Vulture, 23 Oct. 2024
Employers don’t want to be the guinea pig in your experiment to find your next calling.
—Caroline Ceniza-Levine, Forbes, 19 Oct. 2024
That is because cats see guinea pigs as big hairy mice, which is their favorite prey.
—Nina Turner, Newsweek, 30 Oct. 2024
By creating digital twins of cancer patients, they could be used as virtual guinea pigs, recreating clinical trials to compare the effectiveness of treatments and predict how a patient is likely to respond.
—New Atlas, 28 Oct. 2024
See all Example Sentences for guinea pig 
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Ile-Ife Okantah, Vulture, 23 Oct. 2024
Employers don’t want to be the guinea pig in your experiment to find your next calling.
—Caroline Ceniza-Levine, Forbes, 19 Oct. 2024
That is because cats see guinea pigs as big hairy mice, which is their favorite prey.
—Nina Turner, Newsweek, 30 Oct. 2024
By creating digital twins of cancer patients, they could be used as virtual guinea pigs, recreating clinical trials to compare the effectiveness of treatments and predict how a patient is likely to respond.
—New Atlas, 28 Oct. 2024
See all Example Sentences for guinea pig
Dictionary Entries Near guinea pig
Cite this Entry
“Guinea pig.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/guinea%20pig. Accessed 23 Nov. 2024.
Copy CitationMedical Definition
guinea pig
noun
guin·ea pig
ˈgin-ē-ˌ 
: 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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