noun (n)

• permitting the free passage of electromagnetic radiation(noun.phenomenon)

  Synonym:
  transparence
  Antonym:
  opacity
  

  source: wordnet30
• the quality of being clear and transparent(noun.attribute)

  Synonym:
  transparence, transparentness
  

  source: wordnet30
• picture consisting of a positive photograph or drawing on a transparent base; viewed with a projector(noun.artifact)

  Synonym:
  foil
  

  source: wordnet30
• The quality or condition of being transparent; transparence.(noun)

  source: webster1913