do·nor | \ ˈdō-nər , -ˌnȯr \

Definition of donor 

1 : one that gives, donates, or presents something

2 : one used as a source of biological material (such as blood or an organ)

3a : a compound capable of giving up a part (such as an atom, chemical group, or subatomic particle) for combination with an acceptor

b : an impurity added to a semiconductor to increase the number of mobile electrons

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Examples of donor in a Sentence

The money was raised from individual donors. She is one of the charity's major donors.

Recent Examples on the Web

Recently, the Literacy Coalition celebrated its fifth anniversary in the building with a reception for donors, board members, volunteers and staff. Kari Barnett,, "Literacy Coalition of Palm Beach County looks back on 5 years in new building," 12 July 2018 For his part, Scott has also aligned himself closely with the agenda of the sugar industry, a long-time campaign donor, a power broker in Tallahassee and a key employer for some of the state's poorest agricultural communities. David Smiley And Mary Ellen Klas, miamiherald, "Florida’s politicians use slimy algae to muddy each other," 11 July 2018 The great night of bringing CancerFree KIDS donors, ambassadors and researchers together has become an annual event. Chuck Gibson,, "$800,000 in research grants awarded by CancerFree KIDS," 10 July 2018 ELi has about 600 donors, nearly all of whom are local, with contributions ranging from $1 to $100 a month, or several thousand dollars in a lump sum. Christa Case Bryant, The Christian Science Monitor, "As local news outlets struggle to survive, citizen-led efforts are stepping up," 10 July 2018 Pruitt’s work at the EPA has pleased major Trump donors, like coal baron Robert Murray. Umair Irfan, Vox, "Why Scott Pruitt lasted so long at the EPA, and what finally did him in," 7 July 2018 The public financing bill is designed to diminish the influence that wealthy political donors — such as developers, law firms and corporations — have over races for Baltimore mayor and City Council. Luke Broadwater,, "Groups call on Mayor Pugh to support public financing of Baltimore elections," 6 July 2018 The labor federation is working with liberal mega-donor Tom Steyer on a large field program to flip more than half a dozen California House seats held by vulnerable Republicans that could help determine control of Congress. Alexei Koseff, sacbee, "After 'wake-up call' from Supreme Court, California unions face tough political choices," 3 July 2018 The Mercer family, among the biggest donors to the Republican Party, amply subsidized his provocations. Jeet Heer, The New Republic, "Milo Yiannopoulos wants “vigilante squads” to start shooting journalists.," 26 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'donor.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of donor

15th century, in the meaning defined at sense 1

History and Etymology for donor

Middle English donoure, from Anglo-French doneur, from Latin donator, from donare

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Phrases Related to donor

donor card

sperm donor

Statistics for donor

Last Updated

1 Sep 2018

Look-up Popularity

Time Traveler for donor

The first known use of donor was in the 15th century

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More Definitions for donor



English Language Learners Definition of donor

: a person or group that gives something (such as money, food, or clothes) in order to help a person or organization

: a person who gives something (such as blood or a body organ) so that it can be given to someone who needs it


do·nor | \ ˈdō-nər \

Kids Definition of donor

: a person who donates


do·nor | \ ˈdō-nər , -ˌnȯ(ə)r \

Medical Definition of donor 

1 : one used as a source of biological material (as blood or an organ)

2 : a compound capable of giving up a part (as an atom, chemical group, or elementary particle) for combination with an acceptor

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do·nor | \ ˈdō-nər, -ˌnȯr \

Legal Definition of donor 

: one that gives, donates, grants, or confers something specifically : settlor

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Comments on donor

What made you want to look up donor? Please tell us where you read or heard it (including the quote, if possible).


occurring twice a year or every two years

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