DispersionDispersion can mean any of several things:
- A phenomenon that causes the separation of a wave into components of varying frequency. See dispersion (optics).
- In chemistry:
- A stable or unstable system of fine particles, larger than colloidal size, evenly distributed in a medium.
- The fraction of atoms of a material exposed to the surface. See dispersion (materials science).
- In the technical terminology of gemmology, the difference in the refractive index of a material at the B and G Fraunhofer wavelengths of 686.7 nm and 430.8 nm. Simply, the degree to which the gemstone shows fire or color. See Abbe number and dispersion (optics).
- Statistical dispersion.