A made-up word used in music, specifically brass bands, which combines graduate, grade and possibly radiate, though the historical accuracy of this is yet to be confirmed. Normally used to describe dynamics.
"Basses, please gradiate that crescendo. I don't want you to peak too soon." (Beurgh)
by doyleysthesaurus.com September 28, 2010
The unofficial verb of gradient, often used in image manipulation.
If you create landscape pictures, you'll need to gradiate sunsets to make them look realistic.
by TheLastGoodSubmitter June 30, 2013