breed·er | \ ˈbrē-dər \

Definition of breeder 

: one that breeds: such as

a : an animal or plant kept for propagation

b : one engaged in the breeding of a specified organism

c : a nuclear reactor designed to produce more fissionable material than it uses as fuel

called also breeder reactor

Examples of breeder in a Sentence

Recent Examples on the Web

WinStar owner Kenny Troutt, trainer Bob Baffert, jockey Mike Smith and breeder John Gunther all attended and received their engraved Kentucky Derby trophies from Churchill officials. Louisville Courier Journal, The Courier-Journal, "Triple Crown winner Justify gets festive sendoff from Churchill Downs," 16 June 2018 Irish horse breeder John Magnier will get at least $150 million for a painting of a nude by Amedeo Modigliani on May 14 in New York at Sotheby’s, thanks to a third-party guarantee. Frederik Balfour,, "Top Collectors Reveal the Secrets of How to Invest in Art," 7 May 2018 Their family had never shown dogs before Erin started, at the suggestion of their Doberman’s breeder. Jennifer Peltz, The Seattle Times, "Dog show’s young handlers take a grown-up sport in stride," 12 Feb. 2018 But that bend doesn’t happen soon enough for June, whose child is taken from her before she’s sent into servitude as a breeder by Gilead. Lorraine Ali,, "'The Handmaid's Tale': A deeper look at the chillingly prescient second season," 9 July 2018 Those remarks prompted angry bull breeders to answer that, without the bullfights Asiron could forget about the bull runs. Aritz Parra, The Christian Science Monitor, "'Macho' Spanish bull festival feels heat from #MeToo, animal rights activists," 6 July 2018 Those remarks prompted angry bull breeders to answer that, without the bull fights, Asiron could forget about the bull runs. Time, "Issues of Sexual Abuse and Animal Rights Dominate This Year's Pamplona Bull Festival," 6 July 2018 Today, with no shortage of uranium, the more complex fast reactors can't compete economically with thermal reactors—although some nuclear experts say breeders will one day be needed. Adrian Cho, Science | AAAS, "Congress pushes for multibillion-dollar nuclear reactor that critics call a boondoggle," 3 July 2018 One of the cattle breeders associations in Plateau complained to the state government and security forces that more than 400 of their cattle had been stolen with their herders attacked or killed in recent months. Emmanuel Akinwotu, New York Times, "Nigeria’s Farmers and Herders Fight a Deadly Battle for Scarce Resources," 25 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'breeder.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of breeder

1531, in the meaning defined above

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Statistics for breeder

Last Updated

11 Sep 2018

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Time Traveler for breeder

The first known use of breeder was in 1531

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Medical Definition of breeder 

: one that breeds: as

a : an animal or plant kept for propagation

b : one engaged in the breeding of a specified organism

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Comments on breeder

What made you want to look up breeder? Please tell us where you read or heard it (including the quote, if possible).


occurring twice a year or every two years

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