[ doh-ner ]
/ ˈdoʊ nər /
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See synonyms for: donor / donors on Thesaurus.com

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.
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
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Origin of donor

1400–50; late Middle English donour<Anglo-French (Old French doneur) <Latin dōnātor, equivalent to dōnā(re) (see donation) + -tor-tor


do·nor·ship, nounpre·do·nor, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use donor in a sentence

British Dictionary definitions for donor

/ (ˈdəʊnə) /

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 electronsCompare acceptor (def. 2)

Derived forms of donor

donorship, noun

Word Origin for donor

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

Medical definitions for donor

[ dōnər ]

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

Scientific definitions for donor

[ dōnər ]

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.
An individual from whom blood, tissue, or an organ is taken for transfusion, implantation, or transplant.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.