: 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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Overnight, the corporate breeders were locked out of the Golden State market.—Los Angeles Times, 12 Mar. 2026 The variety was created in 2012 by Belgian breeder Roland Boulanger by crossing a sweet yellow cherry tomato called Baby Blue with the creamy yellow beefsteak White Wonder.—Michele Laufik, Martha Stewart, 11 Mar. 2026 Check your local humane shelter or reputable breeders in your area.—Bestreviews, Mercury News, 10 Mar. 2026 Two days later her mother bought the dog, driving to Wales to pick it up from a breeder who told them that both of its parents were unusually sensitive and intelligent.—Literary Hub, 9 Mar. 2026 See All Example Sentences for breeder