noun.
One that contributes something, such as money, to a cause or fund.
noun.
An individual from whom blood, tissue, or an organ is taken for transfusion, implantation, or transplant.
noun.
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.
noun.
An element introduced into a semiconductor with a negative valence greater than that of the pure semiconductor.
adjective.
Used for transfusion, implantation, or transplant.