Diffuse and Diffuser

verb

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

adjective

• Spread out; not concentrated in one place.
  • usage: "a large diffuse organization"
• Of light. ( transmitted from a broad light source or reflected)
  • synonyms: soft, diffused
• Lacking conciseness.
  • usage: "a diffuse historical novel"

• (v.i.) To pass by spreading every way, to diffuse itself.
• (v.t.) To pour out and cause to spread, as a fluid; to cause to flow on all sides; to send out or extend, in all directions; to spread; to circulate; to disseminate; to scatter; as to diffuse information.
• (a.) Poured out; widely spread; not restrained; copious; full; especially, of style, opposed to concise or terse; verbose; prolix; as, a diffuse style; a diffuse writer.

noun

• Baffle that distributes sound waves evenly.
  • synonyms: diffusor
• Optical device that distributes the light of a lamp evenly.
  • synonyms: diffusor