: 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 plant breeders got busy and improved a Texas wildflower.—Neil Sperry, Fort Worth Star-Telegram, 13 Feb. 2026 There needs to be crackdowns on breeders.—Kate Aurthur, Variety, 8 Feb. 2026 These international operations depend on bloodlines honed over generations by American breeders, law enforcement and animal welfare officials say.—Tracey McManus, Dallas Morning News, 5 Feb. 2026 Complicating matters is that both Mexican long-nosed bats and agaves are slow breeders.—Susan Montoya Bryan, Los Angeles Times, 4 Feb. 2026 See All Example Sentences for breeder