breeder

noun breeders

1. A person who breeds plants or animals (professionally). Breeders have figured out that if they can take one haploid set of chromosomes from a cross and copy it (or double it creating a double haploid), they will have a pure line almost instantly.
2. abbreviation, ellipsis Ellipsis of breeder reactor, a type of nuclear reactor that creates more fissile material than it consumes, often used for the production of atomic weapons.
3. 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. I was wondering if anyone out there could mail me a base for MIT's 'breeder' - the one with 8? puffer trains forming glider-guns. I've seen in in^([sic]) a few books but can't seem to get it working ...
4. derogatory, slang A person who has had or who is capable of having children; a person who is focused on the rearing of their own children. The 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 ther
5. derogatory, humorous A heterosexual person; one whose sexual intercourse can lead to breeding; straggot. Since the breeders started coming here, you can never tell who likes cock.
6. A 40-gallon fish tank, sometimes used to breed fish that is low in height and wide in length, typically measuring 36 inches long, 18 inches wide, and 16 inches high, making it and shallower than a typical 40-gallon aquarium.