breed
Americanverb (used with object)
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to produce (offspring); procreate; engender.
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to produce by mating; propagate sexually; reproduce.
Ten mice were bred in the laboratory.
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Horticulture.
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to cause to reproduce by controlled pollination.
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to improve by controlled pollination and selection.
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to raise (cattle, sheep, etc.).
He breeds longhorns on the ranch.
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to cause or be the source of; engender; give rise to.
Dirt breeds disease. Stagnant water breeds mosquitoes.
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to develop by training or education; bring up; rear.
He was born and bred a gentleman.
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Energy. to produce more fissile nuclear fuel than is consumed in a reactor.
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to impregnate; mate.
Breed a strong mare with a fast stallion and hope for a Derby winner.
verb (used without object)
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to produce offspring.
Many animals breed in the spring.
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to be engendered or produced; grow; develop.
Bacteria will not breed in alcohol.
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to cause the birth of young, as in raising stock.
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to be pregnant.
noun
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Genetics. a relatively homogenous group of animals within a species, developed and maintained by humans.
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lineage; stock; strain.
She comes from a fine breed of people.
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sort; kind; group.
Scholars are a quiet breed.
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Disparaging and Offensive. half-breed.
verb
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to bear (offspring)
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(tr) to bring up; raise
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to produce or cause to produce by mating; propagate
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to produce and maintain new or improved strains of (domestic animals and plants)
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to produce or be produced; generate
to breed trouble
violence breeds in densely populated areas
noun
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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
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a lineage or race
a breed of Europeans
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a kind, sort, or group
a special breed of hatred
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To produce or reproduce by giving birth or hatching.
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To raise animals or plants, often to produce new or improved types.
Other Word Forms
Derived Forms
Conjugated Forms
Present
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has bredperfect 3rd person singular
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have bredperfect
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has been breedingperfect progressive 3rd person singular
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is breedingprogressive 3rd person singular
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have been breedingperfect progressive
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are breedingprogressive
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am breedingprogressive 1st person singular
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breedssingular 3rd person
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breedingparticiple
Past
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had bredperfect
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was breedingprogressive singular
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had been breedingperfect progressive
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were breedingprogressive plural
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bredsimple
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bredparticiple
Future
Etymology
Origin of breed
before 1000; Middle English breden, Old English brēdan to nourish (cognate with Old High German bruotan, German brüten ); noun use from 16th century
Explanation
To breed is to have babies, whether you’re a human or a hermit crab. A breed is also a specific type of a domesticated species, like a poodle or Great Dane. The word breed comes from the Old English bredan which means to "bring young to birth," but also "cherish,” which is how most people feel about their offspring. Awwwww. But the fact is that breeding is reproducing. Also, a breed is a strain or stock of a species, such as a Siamese cat. There are many types of dog breeds, cow breeds, and even pig breeds. Members of a breed usually look and behave in a similar way.
Vocabulary lists containing breed
Word Generation Science - Life Science
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Genetics - Inheritance and Variation of Traits
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"A Modest Proposal," Vocabulary from the satire
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Fruit flies are simple to breed and keep in the lab.
From Science Daily • Jun. 10, 2026
Two of that breed, Mark Z. Barabak and Anita Chabria, can’t see into the future.
From Los Angeles Times • Jun. 7, 2026
Eaton uses a carefully sourced heritage breed bird that’s brined, deboned and served in butter for $35.
From The Wall Street Journal • Jun. 5, 2026
"The breed developed in harsh desert climates and has proven itself in endurance riding, dressage and show jumping," Sapargeldy said.
From Barron's • Jun. 5, 2026
“I am told you had a remarkable breed of tumblers. Could you commission any friend of yours to bring me a pair, if you’ve no further use for ’em?”
From "Great Expectations" by Charles Dickens
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
