Nearby Words
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 object), verb (used without object)
5.
to communicate by heliograph.
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Heliograph
is always a great word to know.
So is light-year. Does it mean:
| a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space |
| the distance traversed by light in one mean solar year, about 5.88 trillion mi. (9.46 trillion km) |
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
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Link To heliograph
Collins
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
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