Dictionary
gra•date
Pronunciation: (grā'dāt), [key]
—v., -dat•ed, -dat•ing.
—
v.i.
to pass by gradual or imperceptible degrees, as one color into another.
—
v.t.
1. to cause to gradate.
2. to arrange in grades.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.