heliograph meaning

UK US

heliograph (noun): an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on.

heliograph has 2 meanings in this dictionary, as noun and verb.

heliograph as a noun

  1. an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on

    Type of: apparatus

heliograph as a verb

  1. signal by means of a mirror and the using the sun's rays

    Type of: sign

Scrabble score: 19 (letter breakdown)

Word lists: words starting with HE · words ending in PH · 10-letter words

More about heliograph on Wikipedia.