noun the marks on an instrument or vessel to indicate degrees or quantity; a scale.
2. graduation ·noun the exposure of a liquid in large surfaces to the air, so as to hasten its evaporation.
3. graduation ·noun 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.