dissemination       
noun [ U ]  formal uk/dɪˌsem.ɪˈneɪ.ʃən/ us/dɪˌsem.əˈneɪ.ʃən/
 散布,传播,宣传
the act of spreading news, information, ideas, etc. to a lot of people
  the dissemination of information 信息的传播 
 Anything that stands in the way of the dissemination of knowledge is a real problem. 任何阻碍知识传播的东西都真正是一个问题。 
 See: disseminate
Synonyms: circulationdistributionpropagation (SPREADING) 
 - More examples
 - Concerns about the dissemination of personal medical information are likely to diminish once research leads to treatments.
 - All commenters who addressed the question opposed electronic dissemination as the sole means to share an offer.