Hydrophane

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Hydrophane \Hy"dro*phane\, n. [Hydro-, 1 + Gr. ? to show,
     appear: cf. F. hydrophane.] (Min.)
     A semitranslucent variety of opal that becomes translucent or
     transparent on immersion in water.
     [1913 Webster]