vt to form with gradations.
2. gradation ·noun the act or process of bringing to a certain grade.
3. gradation ·noun any degree or relative position in an order or series.
4. gradation ·noun a diatonic ascending or descending succession of chords.
5. gradation ·noun a gradual passing from one tint to another or from a darker to a lighter shade, as in painting or drawing.
6. gradation ·noun the act of progressing by regular steps or orderly arrangement; the state of being graded or arranged in ranks; as, the gradation of castes.