Definify.com
Webster 1913 Edition
Diffusion
Dif-fu′sion
,Noun.
[L.
diffusio
: cf. F. diffusion
.] 1.
The act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion.
A
diffusion
of knowledge which has undermined superstition. Burke.
Syn. – Extension; spread; propagation; circulation; expansion; dispersion.
Webster 1828 Edition
Diffusion
DIFFUSION
,Noun.
1.
A spreading or flowing of a liquid substance or fluid, in a lateral as well as a lineal direction; as the diffusion of water; the diffusion of air or light.2.
A spreading or scattering; dispersion; as a diffusion of dust or of seeds.3.
A spreading; extension; propagation; as the diffusion of knowledge, or of good principles.4.
Copiousness; exuberance, as of style. [Little used.]