heliograph heliograph

Definition(s):

  1. (n) an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on
  2. (v) signal by means of a mirror and the using the sun's rays

Usage(s):

  • In the flash of heliograph signals in the North Sea haze and the speaking of great naval guns, the world has lately read a certain statement about the British Empire.

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engender engender
/ɛn ˈdʒɛn dər /