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tate of being diffused; a spreading; extension; dissemination; circulation; dispersion. A diffusion of knowledge which has undermined superstition. Burke.

An apparatus used in beet-sugar factories to heat the juice in order to aid the diffusion.

The act of passing from place to place or person to person; free diffusion; transmission. The true doctrines of astronomy appear to have had some popular circulation. Whewell.

different substances in solution, as crystalloids and colloids, by means of their unequal diffusion, especially through natural or artificial membranes.

Prepared by diffusion through an animal membrane; as, dialyzed iron.

The emission and diffusion of rays of light.

The act of disseminating, or the state of being disseminated; diffusion for propagation and permanence; a scattering or spreading abroad, as of ideas, beliefs, etc. The universal dissemination of those writings. Wayland.

One opposed to the diffusion of knowledge; an obscuriantist.

An association of underwriters and others in London, for the collection and diffusion of marine intelligence, the insurance, classification, registration, and certifying of vessels, and the transaction of business of various kinds connected with shipping.

The spreading abroad, or extension, of anything; diffusion; dissemination; as, the propagation of sound; the propagation of the gospel. Bacon.

The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness.