noun (n)

• something that is emitted or radiated (as a gas or an odor or a light, etc.)(noun.substance)

  source: wordnet30
• the act of emitting; causing to flow forth(noun.act)

  Synonym:
  emission
  

  source: wordnet30
• (theology) the origination of the Holy Spirit at Pentecost(noun.event)

  Example:
  The emanation of the Holy Spirit.
  

  Synonym:
  procession, rise
  

  source: wordnet30
• The act of flowing or proceeding from a fountain head or origin.(noun)

  source: webster1913