testamentary, a. [L. testamentarius: cf. F. testamentaire.].
Of or pertaining to a will, or testament; as, letters testamentary. [1913 Webster]
Bequeathed by will; given by testament. [1913 Webster]
"How many testamentary charities have been defeated by the negligence or fraud of executors!"
[1913 Webster]
Done, appointed by, or founded on, a testament, or will; as, a testamentary guardian of a minor, who may be appointed by the will of a father to act in that capacity until the child becomes of age. [1913 Webster]