act of diffusing; state of being diffused.

prolixity of speech or writing; discursiveness.

Physics .

Also called migration. an intermingling of molecules, ions, etc., resulting from random thermal agitation, as in the dispersion of a vapor in air.

a reflection or refraction of light or other electromagnetic radiation from an irregular surface or an erratic dispersion through a surface; scattering.

Movies . a soft-focus effect resulting from placing a gelatin or silk plate in front of a studio light or a camera lens, or through the use of diffusion filters.

Meteorology . the spreading of atmospheric constituents or properties by turbulent motion as well as molecular motion of the air.

Anthropology, Sociology . the transmission of elements or features of one culture to another.

noun

collection , concentration

noun

circulation , dispersal , dispersion , dissemination , dissipation , expansion , propaganda , propagation , scattering , diffuseness , long-windedness , pleonasm , prolixity , redundancy , verbiage , verboseness , verbosity , windiness , wordage