- the producing of offspring.
- the improvement or development of breeds of livestock, as by selective mating and hybridization.
- the production of new forms by selection, crossing, and hybridizing.
- training; nurture: He is a man of good breeding.
- the result of upbringing or training as shown in behavior and manners; manners, especially good manners: You can tell when a person has breeding.
- the production in a nuclear reactor of more fissile material than is consumed.
- the process of bearing offspring; reproduction
- the process of producing plants or animals by sexual reproduction
- the result of good training, esp the knowledge of correct social behaviour; refinement
- a person's line of descent
- a process occurring in a nuclear reactor as a result of which more fissionable material is produced than is used up
