What is "donor"

Donor \Do"nor\, n. [F. donneur, OF. daneor, fr. donner. See Donee, and cf. Donator.]

1. One who gives or bestows; one who confers anything gratuitously; a benefactor. Inverse of recipient.

2. (Law) One who grants an estate; in later use, one who confers a power; -- the opposite of donee.
   --Kent.

   Touching, the parties unto deeds and charters, we are to consider as well the donors and granters as the donees or grantees.
   --Spelman.

mid-15c., from Anglo-French donour, Old French doneur (Modern French donneur), from Latin donatorem (nominative donator) "giver, donor," agent noun from past participle stem of donare "give as a gift" (see donation). Of blood, from 1910; of organs or tissues, from 1918.

n. 1 One who donates, typically, money. 2 (context chemistry English) (rfdef: English)

1. n. person who makes a gift of property [syn: giver, presenter]

2. (medicine) someone who gives blood or tissue or an organ to be used in another person (the host)

A donor in general is a person, organization or government who donates something voluntarily. The term is usually used to represent a form of pure altruism but sometimes used when the payment for a service is recognized by all parties as representing less than the value of the donation and that the motivation is altruistic. In business law, a donor is someone who is giving the gift, and a donee the person receiving the gift.

More broadly, the term is used to refer to any entity that serves as the source of something transferred to a different entity, including in scientific fields the source of matter or energy passed from one object to another.

"Donor" is an episode of The Outer Limits television show. It first aired on 29 January 1999.

In fairy tales, a donor is a character that tests the hero (and sometimes other characters as well) and provides magical assistance to the hero when he succeeds.

The fairy godmother is a well-known form of this character. Many other supernatural patrons feature in fairy tales; these include various kinds of animals and the spirit of a dead mother.

In semiconductor physics, a donor is a dopant atom that, when added to a semiconductor, can form an n-type region.

For example, when silicon (Si), having four valence electrons, needs to be doped as an n-type semiconductor, elements from group V like phosphorus (P) or arsenic (As) can be used because they have five valence electrons. A dopant with five valence electrons is also called a pentavalent impurity. Other pentavalent dopants are antimony (Sb) and bismuth (Bi).

When substituting a Si atom in the crystal lattice, four of the valence electrons of phosphorus form covalent bonds with the neighbouring Si atoms but the fifth one remains weakly bonded. At room temperature, all the fifth electrons are liberated, can move around the Si crystal and can carry a current and thus act as charge carriers. The initially electroneutral donor becomes positively charged (ionised).

Donor (foaled 1944) was an American Thoroughbred racehorse sired by the champion Challedon. He was bred and owned by W. Deering Howe, the great-grandson of William Deering, founder of the Deering Harvester Company.

Racing at age two, Donor won seven of his twelve races. He won prestigious races such as the Sapling Stakes at Monmouth Park, the Sanford Stakes at Saratoga Race Course, and the Champagne Stakes at Belmont Park to be considered a top 2 year old. He ran third to the 2 yr old champion Double Jay in the James H. Connors at Narragansett Park.

He returned to racing late in the spring at age three and won the Yankee Handicap at Suffolk Downs. The Daily Racing Form reported: "Deering Howe's Donor, one of the leaders in the juvenile division last season, propelled himself into a contending position for sophomore honors when he turned in a sparkling effort to account for the $25,000 Yankee Handicap here this afternoon before a colorful and enthusiastic gathering of 33,196." He also added the Jerome Handicap as a sophomore runner.

As an older horse, he won the Saratoga Handicap, the New York Handicap, and the Manhattan Handicap, and became the first (and only) two-time winner of the Narragansett Special. 70 days after the first Narragansett Special win, W. Deering Howe died at Varadero Beach, Cuba. His second wife continued to campaign Donor until 1952.

In his second Narragansett Special victory, he defeated Calumet Farm's Kentucky Derby winner Ponder and Santa Anita Handicap winner Vulcan's Forge in a three-way photo. An eye-witness account read, "Donor hit the home stretch with a clear lead, but Vulcan's Forge was closing the gap. A 3 length lead was down to two with three sixteenths of a mile to race. With 200 yds left the lead was just one and Ponder was roaring down the middle of the track like a freight train. Now 100 yds to go and Vulcan's Forge came up to the neck of Donor who digs in and refuses to yield. All the while Ponder continues to gain with each jump. Three horses across the track reaching for the wire as the roar of the crowd rises to the heights.

I cried, “He didn't get there”, as the top three finished virtually together. Donor had kept his head in front and Vulcan's Forge was a neck beyond the Kentucky Derby winner. I knew Ponder was third as the great thoroughbreds continued past our spot. Yet, I wasn't disappointed. It was a great race..."