What is the meaning of dissemination?

noun

• The opening of a subject to widespread discussion and debate.
  • synonyms: airing, public exposure, spreading
• The property of being diffused or dispersed.
  • synonyms: diffusion
• The act of dispersing or diffusing something.
  • usage: "the dispersion of the troops"; "the diffusion of knowledge"
  • synonyms: dispersion, dispersal, diffusion