opalescence

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English[edit]

Noun[edit]

opalescence (countable and uncountable, plural opalescences)

  1. the state of being opalescent
  2. (physics) the milky iridescent appearance of a dense transparent medium when it is illuminated by polychromatic visible radiation (such as sunlight) due to local fluctuations in its density and therefore in its refractive index

References[edit]