verb (used with object), bred, breeding.
to produce (offspring); procreate; engender.
to produce by mating; propagate sexually; reproduce: Ten mice were bred in the laboratory.
to cause to reproduce by controlled pollination.
to improve by controlled pollination and selection.
to raise (cattle, sheep, etc.): He breeds longhorns on the ranch.
to cause or be the source of; engender; give rise to: Dirt breeds disease. Stagnant water breeds mosquitoes.
to develop by training or education; bring up; rear: He was born and bred a gentleman.
Energy. to produce more fissile nuclear fuel than is consumed in a reactor.
to impregnate; mate: Breed a strong mare with a fast stallion and hope for a Derby winner.
verb (used without object), bred, breeding.
to produce offspring: Many animals breed in the spring.
to be engendered or produced; grow; develop: Bacteria will not breed in alcohol.
to cause the birth of young, as in raising stock.
to be pregnant.
Genetics. a relatively homogenous group of animals within a species, developed and maintained by humans.
lineage; stock; strain: She comes from a fine breed of people.
sort; kind; group: Scholars are a quiet breed.
Disparaging and Offensive. half-breed ( def 2 ).

before 1000; Middle English breden, Old English brēdan to nourish (cognate with Old High German bruotan, German brüten); noun use from 16th century

breedable, adjective
overbreed, verb (used with object), overbred, overbreeding.
rebreed, verb, rebred, rebreeding.
subbreed, noun

1, 2. beget, bear, generate. 5. promote, occasion, foster, produce, induce, develop. 14. family, pedigree, line. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
breed (briːd)
vb , breeds, breeding, bred
1.  to bear (offspring)
2.  (tr) to bring up; raise
3.  to produce or cause to produce by mating; propagate
4.  to produce and maintain new or improved strains of (domestic animals and plants)
5.  to produce or be produced; generate: to breed trouble; violence breeds in densely populated areas
6.  a group of organisms within a species, esp a group of domestic animals, originated and maintained by man and having a clearly defined set of characteristics
7.  a lineage or race: a breed of Europeans
8.  a kind, sort, or group: a special breed of hatred
[Old English brēdan, of Germanic origin; related to brood]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

O.E. bredan "bring young to birth, carry," also "cherish, keep warm," from W.Gmc. *brodjan (cf. O.H.G. bruoten, Ger. brüten "to brood, hatch"), from *brod- "fetus, hatchling," from PIE *bhreue- "burn, heat" (see brood). Original notion of the word was incubation, warming
to hatch. Breeding "good manners" is from 1590s.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
breed   (brēd)  Pronunciation Key 
  1. To produce or reproduce by giving birth or hatching.

  2. To raise animals or plants, often to produce new or improved types.

Noun   A group of organisms having common ancestors and sharing certain traits that are not shared with other members of the same species. Breeds are usually produced by mating selected parents.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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