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[doh-ner] /ˈdoʊ nər/
a person who gives or donates.
Medicine/Medical. a person or animal providing blood, an organ, bone marrow cells, or other biological tissue for transfusion or transplantation: sperm donor; organ donor.
Law. a person who gives property by gift, legacy, or devise, or who confers a power of appointment.
of or relating to the biological tissue of a donor:
donor organ.
Origin of donor
late Middle English
1400-50; late Middle English donour < Anglo-French (Old French doneur) < Latin dōnātor, equivalent to dōnā(re) (see donation) + -tor -tor
Related forms
donorship, noun
predonor, noun
1. supporter, contributor, sponsor, patron. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for donor


a person who makes a donation
(med) any person who voluntarily gives blood, skin, a kidney etc, for use in the treatment of another person
  1. a person who makes a gift of property
  2. a person who bestows upon another a power of appointment over property
the atom supplying both electrons in a coordinate bond
an impurity, such as antimony or arsenic, that is added to a semiconductor material in order to increase its n-type conductivity by contributing free electrons Compare acceptor (sense 2)
Derived Forms
donorship, noun
Word Origin
C15: from Old French doneur, from Latin dōnātor, from dōnāre to give
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for donor

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.

Online Etymology Dictionary, © 2010 Douglas Harper
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donor in Medicine

donor do·nor (dō'nər)

  1. One from whom blood, tissue, or an organ is taken for use in a transfusion or transplant.

  2. A chemical compound that can transfer an atom, a radical, or a particle to an acceptor.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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donor in Science
  1. An atom or molecule that releases one or more electrons to another atom or molecule, resulting in a chemical bond or flow of electric current. Compare acceptor. See also electron carrier.

  2. An individual from whom blood, tissue, or an organ is taken for transfusion, implantation, or transplant.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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