Definition: The word "achromatisation" has its origin in Germanic languages, but it has been adopted by many other languages from Latin, French, Italian, Spanish, and others. It means a change or alteration that occurs when there is an imbalance or disorder of something, such as colors. For example: 1. The achromatic (unequal) color spectrum shows only two primary colors, red and green. 2. If you mix paints with the wrong colors, they may turn out "achromatized", resulting in a mixture that looks like this: yellow-green-yellow-red. 3. In a painting, if you have too much or too little of one color, it will look "achromatic" by itself. In summary, achromatisation is an alteration that occurs when there's an imbalance or disorder in something, such as colors. It can be either intentional (like mixing paints) or unintentional (like having too many or too few shades of a color).

achromatisation