WordNet: extension, propagation

the spreading of something (a belief or practice) into new regions

• hypernym airing, dissemination, public exposure, spreading

extension

• (suomi) levittäminen (synonyymi)

propagation

• (englanti) propagate (derivationally related)

• (englanti) propagate (derivationally related)
• (suomi) levittäminen (synonyymi)