/ˌɡræd.əˈtɔr.i/ GRAD-uh-tor-ee

Definitions

1. adjective

Pertaining to or relating to a gradient, especially one of color or brightness.

“The gradatory effect in the painting was achieved by layering different shades of blue.”

2. noun

A device or system that produces or measures a gradient, especially one of color or brightness.

“The camera used a gradatory to capture the subtle color transitions in the sunset.”