This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. One that contributes something, such as money, to a cause or fund.

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

n. Chemistry An atom, molecule, or ion that provides a part to combine with an acceptor, especially an atom that provides two electrons to form a bond with another atom.

n. Electronics An element introduced into a semiconductor with a negative valence greater than that of the pure semiconductor.

adj. Medicine Used for transfusion, implantation, or transplant: a donor organ.

n. One who donates, typically, money.

n. One who gives or bestows; one who confers anything gratuitously; a benefactor. Inverse of recipient.

n. One who grants an estate; in later use, one who confers a power; -- the opposite of donee.

n. One who gives or bestows; one who confers anything gratuitously; a benefactor.

n. Specifically, in law: A giver.

n. One who creates an estate tail.

n. One who gives to another a power. See power.

n. (medicine) someone who gives blood or tissue or an organ to be used in another person (the host)

n. person who makes a gift of property

"Throughout this article I have been careful to use the term "donor kidney," meaning one from an anonymous deceased donor, per the protocols of the national organ registry."

donee   

organ donor    blood donor    donator   

Stoner    boner    honer    kroner    kronor    loner    owner    stoner    toner   

donation    contributor    benefactor    patron    sponsor    recipient    voter    volunteer    buyer    supporter