prop·a·ga·tion /ˌprɑpəˈgeʃən/
 增殖,繁殖,廣傳


 prop·a·ga·tion /ˌprɑpəˈgeʃən/ 名詞
 繁殖,傳播


 propagation
 傳播


 Prop·a·ga·tion n.
 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.

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 propagation
      n 1: the spreading of something (a belief or practice) into new
           regions [syn: extension]
      2: the act of producing offspring or multiplying by such
         production [syn: generation, multiplication]
      3: the movement of a wave through a medium