† acciˈdentiary,a.Obs.rare—1. [f. L. accidentia accidence2 + -ary.] Engaged on the accidence (in Grammar). 1633Bp. Morton Discharge 186 You know the word Sacerdotes to signifie Priests, and not the Lay-people, which every Accedentiarie boy in schooles knoweth as well as you.