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.
Horse breeders and owners can also deduct their losses against any type of income, including capital gains and salary, according to Green. Hayley Cuccinello, CNBC, 25 Sep. 2025 Same breeder from two hours away, same birthday, same litter. Rachael O'Connor, MSNBC Newsweek, 21 Sep. 2025 Most are some shade of purple, but breeders have released asters in shades of pink, strawberry, and creamy white. Andy Wilcox, Better Homes & Gardens, 20 Sep. 2025 Most fisheries biologists would point to usual suspects like not enough eggs, but Waldman cites decent numbers of 10-to 20-pound fish which tend to be the breeders. Christine Peterson, Outdoor Life, 17 Sep. 2025 See All Example Sentences for breeder

Word History

First Known Use

1531, in the meaning defined above

Time Traveler
The first known use of breeder was in 1531

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Cite this Entry

“Breeder.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/breeder. Accessed 30 Sep. 2025.

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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