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Definition of guppy noun from the Oxford Advanced Learner's Dictionary

guppy

noun
 
/ˈɡʌpi/
 
/ˈɡʌpi/
(plural guppies)
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  1. a small freshwater fish, commonly kept in aquariumsTopics Fish and shellfishc2
    Word Origin1920s: named after R. J. Lechmere Guppy (1836–1916), a Trinidadian clergyman who sent the first specimen to the British Museum.
See guppy in the Oxford Advanced American Dictionary
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