itineration, recitation of the Law, and preaching were the chief instruments for the propagation of Buddhism.
All that Gautama did was to preach his Dharma, ‘Law,’ during forty-five years of itineration, and oral teaching.
c.1600, from Late Latin itineratus, past participle of itinerare "to travel" (see itinerant). Especially "to travel from place to place preaching" (1775). Related: Itinerated; itinerating.