breeder

noun

breed·​er ˈbrē-dər How to pronounce breeder (audio)
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
About 40 dogs were killed in an early morning house fire in Washington state, after flames engulfed a home owned by a man who claimed to be a dog breeder, officials said. Stephen Sorace, FOXNews.com, 18 Jan. 2026 The breeder kept setting delivery dates, and then cancelling. Dave Lieber jan. 18, Dallas Morning News, 18 Jan. 2026 Plant breeder and geneticist Xingbo Wu is working with growers to develop vanilla as a viable crop in South Florida, a region with the perfect tropical climate for this vining orchid. Joan Murray, Miami Herald, 13 Jan. 2026 Federal authorities have raided the East Texas ranch of a dog breeder who was recorded on video shooting and killing one of her animals. J.d. Miles, CBS News, 10 Jan. 2026 See All Example Sentences for breeder

Word History

First Known Use

1529, in the meaning defined above

Time Traveler
The first known use of breeder was in 1529

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Cite this Entry

“Breeder.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/breeder. Accessed 29 Jan. 2026.

Medical Definition

breeder

noun
breed·​er
: one that breeds: as
a
: an animal or plant kept for propagation
b
: one engaged in the breeding of a specified organism

More from Merriam-Webster on breeder

Last Updated: - Updated example sentences
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