Longman Dictionary of Contemporary English homepage

Date: 1400-1500
Language: Old French
Origin: doneur, from Latin donare 'to give'

donor

noun
     
do‧nor [countable]
1 a person, group etc that gives something, especially money, to help an organization or country:
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.
2MH someone who gives blood or a body organ so that it can be used in the medical treatment of someone else:
Some patients die before a suitable donor is found.
blood/organ/kidney etc donor
the shortage of blood donors

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