breeder

noun

breed·​er ˈbrē-dər 

: 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

Protection laws vary by country – for instance, a breeder in Japan who wants to prevent their unique variety from being copied in China or South Korea would need to apply for protection separately in those countries. — Jessie Yeung, CNN Money, 19 Sep. 2026

Although garden mums are considered hardy to Zone 5, breeders have developed fall mums with big mounds of showy flowers that may not be as cold-hardy as in the past. — Lynn Coulter, Better Homes & Gardens, 12 Sep. 2026

Bred and owned by German breeder Julius-Peter Sinnack, United’s parents come from an unusually close family line. — Danielle Rossingh, New York Times, 8 Sep. 2026

Myers explained that breeders can start with healthy animals that have sound anatomy, perform genetic and health screenings and maintain genetic diversity. — Maddie Rhodes, USA Today, 3 Sep. 2026

Word History

First Known Use

1529, in the meaning defined above

Rhymes for breeder

• bleeder
• feeder
• leader
• lieder
• meader
• pleader
• reader
• reeder
• seeder
• weeder
• cheerleader
• proofreader

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