noun, noun or participle which takes 'suru', intransitive verb
spreading; dissemination; scattering
General use for things spreading out widely: information, rumors, substances, etc. Often used with する as an intransitive verb.
うわさが瞬く間に拡散した。
The rumor spread in the blink of an eye.
情報
Measures to prevent the dissemination of information are necessary.
noun, noun or participle which takes 'suru', intransitive verb
Scientific/technical term for the physical process of diffusion, e.g., of light, gases, or particles.
光が霧の中で拡散する。
Light diffuses in the fog.