vbl. sb. [f. ADD v. + -ING1.] The act or process of putting or joining one thing to another, or of combining several quantities into one; addition. (Now mostly gerundial.)
c. 1391. Chaucer, Astrolabe (1872), 52. Thries 20 feet ys the heyght of the Tour, with addyng of thyn owne persone to thyn eye.
1536. Pilgr. T., 226, in Thynne’s Animadv., 83. It is expresse agaynst godis beading that we to his ruell shold mak any adyng.
1611. Cotgr., Adjoustement, An adding, putting, or setting unto.
1860. Tyndall, Glaciers, II. § 1, 230. By adding sound to sound, silence may be produced.
