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Word: heliograph
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Meaning:
Noun:
- A device for photographing the sun.
- A heliogram.
- An apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight.
- An instrument for measuring the intensity of sunlight.
- obsolete A photograph.
Source: Wiktionary
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Verb:
- intransitive To send a heliograph.
- transitive To send a message by heliograph.
Source: Wiktionary
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