guinea_pig has definitions from the field of zoology
1
[ noun ] a person who is subjected to experimental or other observational procedures; someone who is an object of investigation

Synonyms

subject case

Examples

"the subjects for this investigation were selected randomly" "the cases that we studied were drawn from two different communities"

Related terms

person

2
[ noun ] (zoology) stout-bodied nearly tailless domesticated cavy; often kept as a pet and widely used in research

Synonyms

Cavia_cobaya

Related terms

cavy

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