Literally, to sow; to scatter seed; but seldom or never used in its literal sense. But hence,

To scatter for growth and propagation, like seed; to spread. Thus, principles, opinions and errors are disseminated, when they are spread and propagated. To disseminate truth or the gospel is highly laudable.

To spread; to diffuse. A uniform heat disseminate through the body of the earth.

To spread; to disperse. The Jews are disseminated through all the trading parts of the world.