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guppy

[guhp-ee]
noun, plural gup·pies.
  1. a small, freshwater topminnow, Poecilia reticulata, often kept in aquariums.
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Origin of guppy

named after R.J.L. Guppy (1836–1916) of Trinidad, who presented specimens to the British Museum; catalogued under the New Latin name Gerardinus guppyi in 1866
Also called rainbow fish.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for guppy

guppy

noun plural -pies
  1. a small brightly coloured freshwater viviparous cyprinodont fish, Lebistes reticulatus, of N South America and the Caribbean: a popular aquarium fish
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Word Origin

C20: named after R. J. L. Guppy, 19th-century clergyman of Trinidad who first presented specimens to the British Museum
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for guppy

n.

1925, named for R.J.L. Guppy, Trinidad clergyman who supplied the first specimen (1866) to the British Museum. The family name is from a place in Dorset. The class of streamlined U.S. submarines (1948) is an acronym from greater underwater propulsion power + -y.

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Online Etymology Dictionary, © 2010 Douglas Harper