Gradated vs Gradates - What's the difference?

As verbs the difference between gradated and gradates

is that gradated is (gradate) while gradates is (gradate).

(head)

(gradate)

(gradat)

To change imperceptibly from one gradation of tone etc. to another

To arrange in order of grades

(chemistry) To bring to a certain strength or grade of concentration.

to gradate a saline solution

(head)

(gradate)