VALIDITY n. 3 definitions
Legal strength, force, or authority; that quality of a thing which renders it supportable in law, or equity; as, the validity of a will; the validity of a contract, claim, or title.
VELLUM n.
A fine kind of parchment, usually made from calfskin, and rendered clear and white, -- used as for writing upon, and for binding books. Vellum cloth, a fine kind of cotton fabric, made very transparent, and used as a tracing cloth.