melanoscope

1 definition found

melanoscope - Collaborative International Dictionary of English v.0.48 :

  Melanoscope \Me*lan"o*scope\, n. [Gr. me`las, me`lanos, black +
     -scope.] (Opt.)
     An instrument containing a combination of colored glasses
     such that they transmit only red light, so that objects of
     other colors, as green leaves, appear black when seen through
     it. It is used for viewing colored flames, to detect the
     presence of potassium, lithium, etc., by the red light which
     they emit.
     [1913 Webster]