propagation

1. The multiplication or natural increase in a population. (countable, uncountable) · plant propagation
2. The dissemination of something to a larger area or greater number. (countable, uncountable) · The farmer specialized in the propagation of rare orchids.
3. The winning of new converts. (countable, uncountable)
4. The act of propagating, especially the movement of a wave. (countable, uncountable) · Radio propagation varies with atmospheric conditions.
5. The elongation part of transcription. (countable, uncountable)

Plural propagations