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

Lower lids folded inward, placing optic nerves under duress, a literal reflection of breeder shortsightedness. —Andrew Norman Wilson, Harpers Magazine, 24 Feb. 2026

However, breeders do not have to enroll in the program to sell animals in Florida. —Ana Goñi-Lessan, Sun Sentinel, 20 Feb. 2026

New plant varieties with unique qualities are introduced by breeders and hybridizers every year. —Arricca Elin Sansone, Southern Living, 20 Feb. 2026

While a surge in bird flu cases among breeder chickens pushed the national average to a new record in June, those increases were measured in a few cents. —Claire Malon, Chicago Tribune, 20 Feb. 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