propagation (suomeksi)

lisääntyminen (s: the multiplication or natural increase in a population)
eteneminen (s: the act of propagating, especially the movement of a wave)
leviäminen (s: the dissemination of something to a larger area or greater number)
levittäytyminen (s: the dissemination of something to a larger area or greater number)
levittäminen (s: the dissemination of something to a larger area or greater number)
käännyttäminen (s: winning new converts)