Definition: The act of progressing by regular steps or orderly
arrangement; the state of being graded or arranged in ranks; as, the
gradation of castes.
Definition: The act or process of bringing to a certain grade.
Definition: Any degree or relative position in an order or series.
Definition: A gradual passing from one tint to another or from a
darker to a lighter shade, as in painting or drawing.
Definition: A diatonic ascending or descending succession of chords.
Definition: To form with gradations.