The separation of white light into colors is called

Separation of light into color is known as "Dispersion".

Explanation:

There presents a "collection of component colors in white light" which is also known as visible light. The white light is passed through the prism and it is divided into Red, Green, orange, blue, violet and yellow colors. Dispersion is the process of separation of light into different colors. This phenomenon of Dispersion of White light was discovered by "Isaac Newton in 1666".

The separation of visible light into its different colors is known as dispersion.