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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

law

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

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.