From Longman Dictionary of Contemporary Englishdonordo‧nor /ˈdəʊnə $ ˈdoʊnər/ ●○○ noun [countable] 1 SSOGIVEa person, group etc that gives something, especially money, to help an organization or country → donate We urgently need more assistance from donor countries (=countries that give money, food etc to help in poor countries or disaster areas). An anonymous donor (=whose name is unknown) has given £500 towards the restoration fund.2 MHsomeone who gives blood or a body organ so that it can be used in the medical treatment of someone else → donate Some patients die before a suitable donor is found.blood/organ/kidney etc donor the shortage of blood donorsCOLLOCATIONS – Meaning 2: someone who gives blood or a body organ so that it can be used in the medical treatment of someone elseADJECTIVES/NOUN + donor a suitable donorAfter a 10-month wait, a suitable donor was found.a blood donorAre you willing to register as a blood donor?an organ donorThere are not nearly enough organ donors.a heart/liver/kidney etc donorThere is a shortage of kidney donors.a sperm/egg donor (=a man who gives sperm or a woman who gives eggs to help someone else have a baby)Her husband was infertile so they conceived using a sperm donor.donor + NOUNa donor organShe had to wait for over a year before a donor organ became available.a donor heart/liver/kidney etcThe technique keeps the donor heart beating while it is transported.donor bloodDonor blood had to be used during the operation.a donor card (=that you carry to give permission for your organs to be used if you die)Do you carry a donor card?
Examples from the Corpus
donor• The museum received $10,000 from an anonymous donor.• Some require anonymous donors who perceive their role as similar to that of blood donors.• That statistic comes from a mail-in survey of 34,700 blood donors nationwide, he said.• Finding a liver donor may be difficult.• In return, major donors were granted various privileges, depending on how much they had given.• Moreover, dozens of donors came from outside New York state.• In Wisconsin, the drugs have been used routinely in organ donors, without problems, for decades.• Money for the new health centre has come mostly from private donors.• Some donor countries have criticized the way in which their aid is being distributed.anonymous donor• The Free Presbyterians' fines were paid by an anonymous donor.• An anonymous donor had given 20 gallons of cooking oil, desperately needed in the stricken country.• Another anonymous donor regularly left a sugar bag full of food on the Burrows' front verandah.• It is abysmal that a gossip writer should use spiky chit-chat from anonymous donors to make money and notoriety for herself.• Some require anonymous donors who perceive their role as similar to that of blood donors.• The blood transfusion brought colour to my face and I am deeply indebted to some anonymous donor.• The anonymous donor, a needlewoman herself, hired it out to film studios in the 1940s.blood/organ/kidney etc donor• That statistic comes from a mail-in survey of 34,700 blood donors nationwide, he said.• Who can become a blood donor?• Blood Transfusion Currently all blood donors are initially screened and blood is not accepted from high risk individuals.• Patterson wrote his daughter in November offering to be her kidney donor.• In Wisconsin, the drugs have been used routinely in organ donors, without problems, for decades.• Some require anonymous donors who perceive their role as similar to that of blood donors.• The National Blood Transfusion Service is entirely dependent on voluntary blood donors.From Longman Business Dictionarydonordo‧nor /ˈdəʊnəˈdoʊnər/ noun [countable] someone who gives money or other valuable things to people who are ill, hungry, poor etcHis fines were paid by an anonymous donor.Japan is Asia’s biggest foreign aid donor, giving over $1.1 billion in official development assistance and loans.Origin donor (1400-1500) Old French doneur, from Latin donare “to give” 