See cultural diffusion
late 14c., from Latin diffusionem (nominative diffusio) "a pouring forth," noun of action from past participle stem of diffundere "scatter, pour out," from dis- "apart, in every direction" (see dis-) + fundere "pour" (see found (v.2)).
diffusion dif·fu·sion (dĭ-fyōō'zhən)n.
The process of diffusing or the condition of being diffused.
The spontaneous intermingling of the particles of two or more substances as a result of random thermal motion.
The movement of atoms or molecules from an area of higher concentration to an area of lower concentration. Atoms and small molecules can move across a cell membrane by diffusion. Compare osmosis.
The reflection or refraction of radiation such as light or sound by an irregular surface, tending to scatter it in many directions.
The spreading of atoms or molecules of one substance through those of another, especially into liquids or gases.