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1. a male parent, esp of a horse or other domestic animal
2. a respectful term of address, now used only in addressing a male monarch



in animal breeding, a male (bull, stallion, boar, ram) used for obtaining offspring. Artificial insemination enables a single valuable sire to produce hundreds or thousands of offspring a year. For pedigree use, sires are selected from highly productive fertile parents and are evaluated on the basis of their ancestors; they must have a proper conformation, good health, and resistance to disease. In the process of pedigree use they are evaluated on the basis of their progeny. A sire whose offspring excels its parents in productivity and pedigree qualities is considered an improver. Especially valuable are sires that consistently transmit valuable properties to their offspring. In the USSR the best sires are kept at centers where pedigree work is conducted and artificial insemination is performed. The semen of sires is exchanged between countries.

References in periodicals archive ?
He spent six seasons shuttling for Coolmore and enjoyed most success in Australia, where he was responsible for Group 1 winner and prominent sire Testa Rossa.
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vvTwo-year-olds ires It is interesting that the leading sire of the European two-year-old list does not figure in the top 25 in Britain and Ireland.
Two of Old Vic's other National quintet, In Compliance and Smoking Aces, feature another strong Aintree influence close up in their pedigrees, as they are out of mares by Montelimar, sire of National winners Hedgehunter and Monty's Pass.
SIRE is truly honored to have received these two prestigious awards which validate our strategy that happy customers are directly related to recruiting and taking care of excellent employees," said Kris Painter, president of SIRE Technologies.
With Darley's second-crop sire Authorized promising to make more of an impact this season, perhaps through the potentially exciting fillies Estrela and Colima, and the likes of Pour Moi, Papal Bull and Frozen Fire waiting in the wings, Montjeu will have more than enough opportunity to create a respected sire line.
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A setback meant Kodiac could not fulfil his juvenile promise until later in his career for John Dunlop, but at stud the strongest area of his record has been as a sire of precocious types; five of his six stakes winners were successful in that sphere at two, while 15 of his 24 juvenile runners between the start of the turf season and May 31 in 2010 and 2011 combined filled the frame.
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Capponi is the seventh winner at the top level by Medicean, who previously struck gold in Dubai as the sire of 2010 Dubai Duty Free winner Al Shemali.