—v.t. 1. to drive or send off in various directions; scatter: to disperse a crowd. 2. to spread widely; disseminate: to disperse knowledge. 3. to dispel; cause to vanish: The wind dispersed the fog. 4. Physical Chem.to cause (particles) to separate uniformly throughout a solid, liquid, or gas.
5. Optics.to subject (light) to dispersion.
—v.i. 1. to separate and move apart in different directions without order or regularity; become scattered: The crowd dispersed. 2. to be dispelled; be scattered out of sight; vanish: The smoke dispersed into the sky.
—adj. Physical Chem.noting the dispersed particles in a dispersion.