Definition of Heliogreph

He"li*o*graph (?), v. t. 1. To telegraph, or signal, with a heliograph.

2. To photograph by sunlight.

He"li*o*graph (?), n. [Helio- + -graph.]ets>

1. A picture taken by heliography; a photograph.

2. An instrument for taking photographs of the sun.

3. An apparatus for telegraphing by means of the sun's rays. See Heliotrope, 3.

He"li*o*graph (?), v. t. 1. To telegraph, or signal, with a heliograph.

2. To photograph by sunlight.

- Webster's Unabridged Dictionary (1913)

An apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight
A heliogram
An instrument for measuring the intensity of sunlight
A device for photographing the sun
(obsolete) A photograph
To send a message by heliograph
To send a heliograph

- The Nuttall Encyclopedia

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The correct Spelling of this word is: Heliograph

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