A person who breeds plants or animals professionally.
(gay slang, derogatory) A heterosexual; i.e. one whose sexual intercourse can lead to breeding.Since the breeders started coming here, you can never tell who likes cock.
A type of nuclear reactor that creates material suitable for the production of atomic weapons. (See Wikipedia's article on fast breeders.)
(slang, derogatory) a person who has had or who is capable of having children; a person who is focussed on the rearing of their own children.
1729: Jonathan SwiftThe number of souls in this kingdom being usually reckoned one million and a half, of these I calculate there may be about two hundred thousand couple whose wives are breeders; from which number I subtract thirty thousand couples who are able to maintain their own children, although I apprehend there cannot be so many, under the present distresses of the kingdom; but this being granted, there will remain an hundred and seventy thousand breeders.
(cellular automata) A pattern that exhibits quadratic growth by generating multiple copies of a secondary pattern, each of which then generates multiple copies of a tertiary pattern.