Dif-fū'ṣion, n.

(dif-fū'zhun), n. [Lat. diffusio, Fr. diffusion, Pr. diffuzio, It. diffusione, Sp. difusion.] The act of diffusing, or the state of being diffused; dissemination; extension; propagation; as, the diffusion of good principles.

A diffusion of knowledge which has undermined superstition. Burke.

Synonyms—Extension; spread; propagation; circulation; expansion; dispersion.