donor

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1. a person who gives or donates.
2. 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.
3. Law. a person who gives property by gift, legacy, or devise, or who confers a power of appointment.

adjective

4. of or relating to the biological tissue of a donor: donor organ.

noun

1. a person who makes a donation
2. med any person who voluntarily gives blood, skin, a kidney etc, for use in the treatment of another person
3. law
   1. a person who makes a gift of property
   2. a person who bestows upon another a power of appointment over property
4. the atom supplying both electrons in a coordinate bond
5. 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)

n.

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.

n.

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.

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.

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