: 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 alsobreeder reactor
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The Jarvises brought Teddy home last year from a breeder, shortly after the death of their former Yorkie, Luna.—Chandler Boese, Kansas City Star, 4 Nov. 2025 Dozens of them were streaming over a tall metal fence at a compound owned by Alpha Genesis, one of the country’s biggest breeders of primates used in scientific experiments.—Ava Kofman, New Yorker, 3 Nov. 2025 Mitzi was one of 26 dogs and puppies who were rescued from a backyard breeder.—Alyce Collins, MSNBC Newsweek, 31 Oct. 2025 Also called the Norway rat, these rodents are highly adaptive and excellent breeders.—Sarah Durn, Popular Science, 30 Oct. 2025 See All Example Sentences for breeder
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