معنی کلمه :‌ propagation

1. In a cruel manner. 2. Extremly; very. [Colloq.] Spectator.

The spreading abroad, or extension, of anything; diffusion; dissemination; as, the propagation of sound; the propagation of the gospel.

The act of propagating; continuance or multiplication of the kind by generation or successive production; as, the propagation of animals or plants.