(1):
(n.) Any degree or relative position in an order or series.
(2):
(n.) A gradual passing from one tint to another or from a darker to a lighter shade, as in painting or drawing.
(3):
(n.) The act or process of bringing to a certain grade.
(4):
(v. t.) To form with gradations.
(5):
(n.) The act of progressing by regular steps or orderly arrangement; the state of being graded or arranged in ranks; as, the gradation of castes.
(6):
(n.) A diatonic ascending or descending succession of chords.