階かい調ちょうかいちょうMeanings1noungradation; gradientTechnical term used in imaging, printing, and signal processing to describe the range or steps of tones, colors, or values.このモニターは階かい調ちょう表ひょう現げんが豊ゆたかだ。This monitor has rich gradation.画が像ぞうの階かい調ちょうを調ちょう整せいする。Adjust the gradation of the image.