propagation

noun5

1. •
   The dissemination of something to a larger area or greater number.

   • The farmer specialized in the propagation of rare orchids.
2. •
   The winning of new converts.
3. •
   The act of propagating, especially the movement of a wave.

   • Radio propagation varies with atmospheric conditions.
4. •
   The multiplication or natural increase in a population.
5. •
   The elongation part of transcription.