'Donor' definitions:

Definition of 'donor'

From: WordNet
noun
Person who makes a gift of property [syn: donor, giver, presenter, bestower, conferrer]
noun
(medicine) someone who gives blood or tissue or an organ to be used in another person (the host)

Definition of 'Donor'

From: GCIDE
  • Donor \Do"nor\, n. [F. donneur, OF. daneor, fr. donner. See Donee, and cf. Donator.]
  • 1. One who gives or bestows; one who confers anything gratuitously; a benefactor. Inverse of recipient. [1913 Webster]
  • 2. (Law) One who grants an estate; in later use, one who confers a power; -- the opposite of donee. --Kent. [1913 Webster]
  • Touching, the parties unto deeds and charters, we are to consider as well the donors and granters as the donees or grantees. --Spelman. [1913 Webster]