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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 ?
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.
Minor winner Nawaiet is a half-sister to 1985 Prix Saint-Alary heroine Fitnah, later the third dam of Grade 3 winner and useful Kentucky sire Cactus Ridge.
The pattern was very similar in Ireland: ten per cent of active mares (1,934) were sent to new sires in 2008 but only six per cent (1,162) in 2009 and five per cent (769) in 2010.
The accompanying table shows living British-based sires who have amassed more than pounds 100,000 in earnings this season.
Freshman sire Mount Nelson, sophomore sires Cockney Rebel and Notnowcato, and proven sire Sakhee complete the line-up.
SADLER'S WELLS' influence is felt strongly in last year's top ten juveniles according to the European Two-Year-Old rankings, with one son, Montjeu, providing jointchampion Camelot and the dam of 117-rated Parish Hall, and another, Galileo, featuring as the grandsire of Parish Hall and as sire of 116-rated Maybe.
Scat Daddy's performance according to The Blood-Horse sees him go one better than his sire Johannesburg on the equivalent list in 2006.
However, no sire could touch Acclamation by number of stakes winners; his two-year-olds won pounds 853,076 between them and included eight stakes-winning juveniles, led by Harbour Watch.
It's all you need, especially when you ally those statistics to our range of British and Irish tables and our lists of sires with worldwide Group 1 winners and European stakes-winners.
As would be expected at Ireland's main yearling sale, Coolmore's sires have often dominated the catalogue, but less so this year.
Sam Bullard, director of stallions at Darley, under whose banner Green Desert stood for five seasons, said: "He has proven to be an outstanding sire of sires and we are fortunate enough to stand his very best son, Cape Cross, and leading freshman of 2008, Kheleyf.
Im honored to be the chief veterinarian, and I am looking forward to leading our team and serving Select Sires in this capacity, said Lahmers.