'Leucoscope' definitions:

Definition of 'Leucoscope'

From: GCIDE
  • Leucoscope \Leu"co*scope\ (l[=u]"k[-o]*sk[=o]p), n. [Leuco- + -scope.] (Physics) An instrument, devised by Professor Helmholtz, for testing the color perception of the eye, or for comparing different lights, as to their constituent colors or their relative whiteness. [1913 Webster]