disperse system n.
A system, such as a colloid, consisting of a substance dispersed in a medium.
dispersion dis·per·sion (dĭ-spûr'zhən, -shən)
The act or process of dispersing.
The state of being dispersed.
The separation by refraction of light or other radiation into individual components of different wavelengths. Dispersion results in most materials because a material's index of refraction depends on the wavelength of the radiation passing through it; thus different wavelengths entering a material along the same path will fan out into different paths within it. Prisms, for example, diffuse white light (which contains an even mixture of visible wavelengths) into its variously colored components; rainbows are an effect of dispersion in water droplets.