A "fast-breeder reactor" is a type of nuclear reactor that uses fast neutrons to breed more fuel than it consumes. Despite its technicality, the term "fast-breeder reactor" has some synonyms that are easy to understand. For instance, some people may use the term "breeder" to refer to this type of nuclear reactor. Another synonym that may be used is "fast neutron reactor," which accurately describes the use of fast neutrons in the reactor. Additionally, people may use the term "FBR" as an abbreviation for "fast-breeder reactor." Other synonyms include "fast reactor" or even simply "nuclear breeder," which refer to the same type of nuclear power plant.