dis·per·sion 
(dĭ-spûrzhən, -shən)
(dĭ-spûrzhən, -shən)n.
1.
a. The act or process of dispersing.
b. The state of being dispersed.
2. Dispersion The Diaspora of the Jews.
3. Statistics The degree of scatter of data, usually about an average value, such as the median.
4. Physics
a. Separation of a complex wave into its component parts according to a given characteristic, such as frequency or wavelength.
b. Separation of visible light into colors by refraction or diffraction.
5. Chemistry See disperse system.
- water-skier
- waterskin
- water snake
- waters of hydration
- water softener
- water-soluble
- water spaniel
- watersports
- waterspout
- water sprite
- water strider
- water supply
- water system
- water table
- water taxi
- waterthrush
- watertight
- water tower
- water turkey
- water under the bridge
- water vapor
- water-vascular system
- waterway
- waterweed
- water wheel