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[bree-der] /ˈbri dər/
an animal, plant, or person that produces offspring or reproduces.
a person who raises animals or plants primarily for breeding purposes.
Also called breeder reactor. Energy. a nuclear reactor in which more fissile material is produced than is consumed.
Origin of breeder
1525-35; breed + -er1
Related forms
nonbreeder, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for breeder reactor

breeder reactor

a type of nuclear reactor that produces more fissionable material than it consumes Compare converter reactor See also fast-breeder reactor


a person who breeds plants or animals
something that reproduces, esp to excess: rabbits are persistent breeders
an animal kept for breeding purposes
a source or cause: a breeder of discontent
short for breeder reactor
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for breeder reactor



1570s, "one who produces or originates," agent noun from breed (v.). Meaning "one who breeds cattle" or some other animal is recorded from 1530s. Of nuclear reactors, from 1948. As a scornful homosexual term for "heterosexual person," attested from 1986.

Online Etymology Dictionary, © 2010 Douglas Harper
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breeder reactor in Science
breeder reactor
A nuclear reactor that is used to create fissionable material (such as plutonium-239) by exposing nonfissionable material (such as uranium-238) to radiation. The source of the radiation is usually some other fissionable material. Breeder reactors produce more fissionable material than they use up.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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breeder reactor in Culture

breeder reactor definition

A nuclear reactor in which plutonium and other materials are produced as a by-product.

Note: Breeder reactors are designed to produce more fuel than they consume.
Note: The development of the breeder reactor has been stopped in the United States, but continues to be pursued in Europe and Japan.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Slang definitions & phrases for breeder reactor



A heterosexual person; straight: the scornful term ''breeders,'' used by some urban gays about heterosexual couples with children (1980s+ Homosexuals)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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