Propagation
Pronunciation : Prop`a*ga"tion
Part of Speech : n.
Etymology : [L. propagatio: cf. F. propagation.]
Definition : 1. The act of propagating; continuance or multiplication of the kind by generation or successive production; as, the propagation of animals or plants. There is not in nature any spontaneous generation, but all come by propagation. Ray.
2. The spreading abroad, or extension, of anything; diffusion; dissemination; as, the propagation of sound; the propagation of the gospel. Bacon.
Source : Webster's Unabridged Dictionary, 1913