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heliograph

[hee-lee-uh-graf, -grahf] /ˈhi li əˌgræf, -ˌgrɑf/
noun
1.
a device for signaling by means of a movable mirror that reflects beams of light, especially sunlight, to a distance.
2.
Astronomy. photoheliograph.
3.
Meteorology. an instrument for recording the duration and intensity of sunshine.
4.
Photography, Printing. an early type of photoengraving made on a metal plate coated with sensitized asphalt.
verb (used with or without object)
5.
to communicate by heliograph.
Origin of heliograph
1815-1825
1815-25; helio- + -graph
Related forms
heliographer
[hee-lee-og-ruh-fer] /ˌhi liˈɒg rə fər/ (Show IPA),
noun
heliographic
[hee-lee-uh-graf-ik] /ˌhi li əˈgræf ɪk/ (Show IPA),
heliographical, adjective
heliographically, adverb
heliography, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for heliographic
Historical Examples
  • The day following I received a heliographic message from these burghers, who were now on the other side of the line.

    Three Years' War Christiaan Rudolf de Wet
  • Mr. Maunder is charged with the heliographic photography and reductions, and with the preparation of the Library Catalogue.

    The Royal Observatory Greenwich E. Walter (Edwared Walter) Maunder
  • On the 17th, heliographic communication was opened with General Ellis.

  • Scanning the horizon line, he hurried impatiently toward the heliographic ridge.

    Vanishing Roads and Other Essays Richard Le Gallienne
  • In one division a regular pioneer squadron has been formed for telegraphic and heliographic duty.

British Dictionary definitions for heliographic

heliograph

/ˈhiːlɪəʊˌɡrɑːf; -ˌɡræf/
noun
1.
an instrument with mirrors and a shutter used for sending messages in Morse code by reflecting the sun's rays
2.
a device used to photograph the sun
Derived Forms
heliographer (ˌhiːlɪˈɒɡrəfə) noun
heliographic (ˌhiːlɪəʊˈɡræfɪk), heliographical, adjective
heliography, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for heliographic

heliograph

n.

product of a certain type of engraving process, 1853, from helio- + -graph "something written." Earlier, "a description of the sun" (1706, implied in heliographic). Heliography (1845 in the engraving sense) also (1840) was an early term for what came to be called photography.

Online Etymology Dictionary, © 2010 Douglas Harper
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25
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