marsvin.
guinea pig (rodent)
Meaning & usage
guinea pig (rodent)
a porpoise, a mereswine (small cetacean of the family Phocoenidae)
Where this word comes from
Inherited from Old Swedish marsvin (“porpoise”), from Middle Low German mersvīn and German Meerschwein, from Old High German meriswīn, from Proto-West Germanic *mariswīn, from Proto-Germanic *mariswīną; equivalent too Meer (“sea”) + Schwein (“pig”). First attested in 1538. Guinea pig sense borrowed from German Meerschweinchen, compound of Meer (“[over]sea”) + Schwein (“pig”) + -chen (diminutive suffix).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.