PROPAGANDA was a collection of GPL-licensed[1] desktop backgrounds often included in Linux distributions and available via free download over the web at the end of the 20th century. The collection consisted of surreal computer art created in The GIMP by...

in chemistry, a description of the catalytically-driven process of polymer elongation

Radio propagation, the application of wave propagation to radio communications

Reproduction, and other forms of multiplication or increase

Plant propagation, the production of more plants by seeds, cuttings, grafting or other methods

Wave propagation, the motion of waves

Propagation (album), a 1994 album by Robert Rich

Software propagation, the distribution of free software in a manner explicitly permitted under the applicable license

Propagation of schema, in artificial reproduction

Proselytisation, the practice of attempting to convert people to another opinion, usually another religion (see Society for the Propagation of the Faith)