Definition of graduation

• n. - 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.
• n. - The marks on an instrument or vessel to indicate degrees or quantity; a scale.
• n. - The exposure of a liquid in large surfaces to the air, so as to hasten its evaporation.