The acronym VIBGYOR (Violet-Indigo-Blue-Green-Yellow-Orange-Red). It is a part of the spectrum of white light.
The white light consists of 7 colors i.e VIBGYOR (Violet-Indigo-Blue-Green-Yellow-Orange-Red).
ROYGBIV, the exact inverse of VIBGYOR.
A rainbow is a meteorological phenomenon caused by the reflection, refraction, and dispersion of light in water droplets, resulting in the appearance of a spectrum of light in the sky.
The dispersion of white light into seven colors after passing through the prism is shown as,