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
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Things began to unravel after Wilson and Matthews' close friend stole several dogs from a breeder with plans to sell them. Samantha Stutsman, PEOPLE, 10 May 2026 Brent Horvath, breeder and owner of Intrinsic Perennial Gardens in Hebron, Illinois, initially began breeding sedums for green roofs because their shallow roots work exceptionally well there. Erica Browne Grivas, Midwest Living, 4 May 2026 The facility holds federal licenses as both a dog breeder and a research facility, and is accredited by AAALAC International, an organization that sets standards for the care of research animals. Jeanine Santucci, USA Today, 30 Apr. 2026 Other Illinois breeders went on to produce the winners of world-class races. Neil Milbert, Chicago Tribune, 29 Apr. 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 13 May. 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

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