Definition of heliograph Heliograph

he•li•o•graph

We found 15 definitions of heliograph from 6 different sources.

What does heliograph mean?

Noun Plural: heliographs
heliograph - an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on
		apparatus, setup equipment designed to serve a specific function
Verb heliographs, heliographing, heliographed
heliograph - signal by means of a mirror and the using the sun's rays
		signal, signalise, signalize, sign make conspicuous or noteworthy

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

heliograph (n.)
A picture taken by heliography; a photograph.
heliograph (n.)
An instrument for taking photographs of the sun.
heliograph (n.)
An apparatus for telegraphing by means of the sun's rays. See Heliotrope, 3.

heliograph
hē′li-o-graf, n. an apparatus for signalling by means of the sun's rays: an engraving obtained by a process in which a specially prepared plate is acted on chemically by exposure to light: an apparatus for taking photographs of the sun.—v.t. to signal to by means of the sun's rays.—n. Heliog′rapher.—adjs. Heliograph′ic, -al.—adv. Heliograph′ically.—ns. Heliog′raphy, a method of communicating swiftly between distant points by means of the sun's rays reflected from mirrors: photography; Heliogrā′vure (or hā-li-ō-gra-vür′), photo-engraving, or a print obtained by this process. [Gr. hēlios, the sun, graphē, a painting—graphein, to write.]

heliograph
An apparatus for reflecting flashes of light to a distant observer. By using the Morse telegraph code messages may thus be transmitted long distances. When possible the sun's light is used.

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heliograph, verb, present, 1st person singular of heliograph (infinitive).
heliograph, verb (infinitive).
heliograph, noun, singular of heliographs.