Propagation
WordNet
noun
(1) The act of producing offspring or multiplying by such production
(2) The spreading of something (a belief or practice) into new regions
(3) The movement of a wave through a medium
WiktionaryText
Noun
propagation
- the multiplication or natural increase in a population
- the dissemination of something to a larger area or greater number
- the act of propagating, especially the movement of a wave
- the elongation part of transcription
- winning new converts
- some degree of success in the spread of propaganda