: 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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But in 1973 President Richard Nixon pulled federal funding for molten-salt research in order to go all-in on a competing breeder reactor that was cooled with sodium.—Colin Jones, New Yorker, 18 Dec. 2025 In addition to cycling, Bonds has, improbably, become an accomplished breeder of miniature schnauzers.—Jeremy Collins, The Atlantic, 12 Dec. 2025 Rose breeder Jackson & Perkins recommends winterizing roses in USDA Plant Hardiness Zones 7 and cooler, which includes the Middle and Upper South.—Brandee Gruener, Southern Living, 12 Dec. 2025 Richemont executives were smitten with the vivid storytelling behind a fledgling leather goods line by Manon Marcelot, who draws inspiration from her rustic upbringing in rural France among cattle breeders.—Miles Socha, Footwear News, 9 Dec. 2025 See All Example Sentences for breeder
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