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

Because the chick's parents are first-time breeders, staff made the decision to hand-rear it, providing around-the-clock care. —Sergio Candido, CBS News, 20 Mar. 2026

Between 3,000 and 5,000 plants from more than 50 breeders are tested annually. —Mary Grace Granados special Contributor, Dallas Morning News, 18 Mar. 2026

Ridglan Farms holds federal licenses both as a dog breeder and as a research facility, and is accredited by AAALAC International, an organization that sets standards for the care of research animals. —Quinn Clark, jsonline.com, 16 Mar. 2026

Overnight, the corporate breeders were locked out of the Golden State market. —Los Angeles Times, 12 Mar. 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