n. [ LL. graduatio promotion to a degree: cf. F. graduation division into degrees. ] [ 1913 Webster ] 1. The act of graduating, or the state of being graduated; as, graduation of a scale; graduation at a college; graduation in color; graduation by evaporation; the graduation of a bird's tail, etc. [ 1913 Webster ] 2. The marks on an instrument or vessel to indicate degrees or quantity; a scale. [ 1913 Webster ] 3. The exposure of a liquid in large surfaces to the air, so as to hasten its evaporation. [ 1913 Webster ] | 