Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A device for transmitting messages by reflecting sunlight.
- n. A device for photographing the sun.
- v. To send (a message) by heliograph.
- v. To send a heliograph.
Century Dictionary and Cyclopedia
- n. A heliotrope; especially, a movable mirror used in signaling, surveying, etc., to flash a beam of light to a distance. In signaling the flashes are caused to follow one another in accordance with a signal-code. The mirror is mounted on a tripod, and has a part of the silvering removed from the back at the center. Two sights are provided in front with a screen. The tripod is set up, and a distant station is sighted through the hole in the mirror. The beam of light is then directed through both sights, and is seen at the distant station. By means of the Morse key, which causes the mirror to move through a limited arc, telegraphic signals can be flashed to a distance of many miles.
- n. In photography: An instrument for taking photographs of the sun.
- n. A picture taken by heliography; a photograph.
- To communicate or signal by means of a heliograph.
- To photograph.
Wiktionary
- n. An apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight.
- n. A heliogram.
- n. An instrument for measuring the intensity of sunlight.
- n. A device for photographing the sun.
- n. A photograph.
- v. To send a message by heliograph.
- v. To send a heliograph.
GNU Webster's 1913
- n. A picture taken by heliography; a photograph.
- n. An instrument for taking photographs of the sun.
- n. An apparatus for telegraphing by means of the sun's rays. See Heliotrope, 3.
- v. To telegraph, or signal, with a heliograph.
- v. To photograph by sunlight.
WordNet 3.0
- v. signal by means of a mirror and the using the sun's rays
- n. an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on
Examples
“The book that Uncle Ed sent us had in it a description of a heliograph, that is, an instrument for sending signals with flashes of sunlight.”
“If the Konor use a visual code, such as heliograph or semaphore, our energy scans would not necessarily detect them. ”
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“An industrial civilization does not easily go back to the Stone Age, but people adjust to what feels like the 19th-century frontier another favorite Heinlein setting: Ceramics replace metals, heliograph substitutes for radio, airdrops come in from outside.”
“Let 'em stand up and vote in opposition to logic and morality, or else grow a spine and some cajones and vote for the good of the country, the troops and what's left of their souls. heliograph wrote on September 19, 2007 2: 01 AM:”
“Tell him how you feel. heliograph wrote on September 18, 2007 9: 44 PM:”
“Well, I was gonna chime in earlier on the clearly delusional heliograph, but it appears my work has been done for me.”
“| Reply | Permalink heliograph wrote on November 1, 2007 1: 35 PM:”
“In this world of the twenty-first century, with all but five per cent of the population concentrated in the mechanized cities, to be out here, miles from civilization, beyond all hope of communication, off the regular air lanes and without radiophone or heliograph.”
“We tried by radio and by heliograph, in accordance with internationally accepted means.”
“It was a lieutenant and a couple of privates of the 8th Hussars, with a stand like a theodolite, which the artilleryman told me was a heliograph.”
Lists
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