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

American breeders began registering Holstein pedigrees and maintaining herdbooks in the 1800s. — Encyclopedia Britannica, 7 Oct. 2026

But many breeders have included these species so that the resulting hybrids are more tolerant of heat and humidity. — Arricca Elin Sansone, Southern Living, 3 Oct. 2026

Some come for the entire summer season, as Big Horn is renowned for its top-quality horses, trainers and breeders. — Irene Middleman Thomas, Denver Post, 27 Sep. 2026

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

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