معنی کلمه :‌ gradation

To form with gradations.

The act or process of bringing to a certain grade.

Of or belonging to Mercury's caduceus, or wand.

Any degree or relative position in an order or series.

A diatonic ascending or descending succession of chords.

A gradual passing from one tint to another or from a darker to a lighter shade, as in painting or drawing.