diffuse in WordNet English dictionary

1. cause to become widely known
   "spread information"; "circulate a rumor"; "broadcast the news"
   circulate  circularize  circularise  distribute  disseminate  propagate  broadcast  spread  diffuse  disperse  pass around 
   
2. spread or diffuse through
   "An atmosphere of distrust has permeated this administration"; "music penetrated the entire building"; "His campaign was riddled with accusations and personal attacks"
   permeate  pervade  penetrate  interpenetrate  diffuse  imbue  riddle 
   
3. move outward
   "The soldiers fanned out"
   diffuse  spread  spread out  fan out 
   

1. (of light) transmitted from a broad light source or reflected
   soft  diffuse  diffused 
   
2. spread out; not concentrated in one place
   "a large diffuse organization"
   diffuse 
   
3. lacking conciseness
   "a diffuse historical novel"
   diffuse