Testamentary \Tes`ta*men"ta*ry\, a. [L. testamentarius: cf. F. testamentaire.]

1. Of or pertaining to a will, or testament; as, letters testamentary.

2. Bequeathed by will; given by testament.

How many testamentary charities have been defeated by the negligence or fraud of executors! --Atterbury.

3. 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.

Source: Webster's Revised Unabridged Dictionary (1913)