heliograph
[ hee-lee-uh-graf, -grahf ]
/ ˈhi li əˌgræf, -ˌgrɑf /
noun
a device for signaling by means of a movable mirror that reflects beams of light, especially sunlight, to a distance.
Astronomy.
photoheliograph.
Meteorology.
an instrument for recording the duration and intensity of sunshine.
Photography, Printing.
an early type of photoengraving made on a metal plate coated with sensitized asphalt.
verb (used with or without object)
to communicate by heliograph.
OTHER WORDS FROM heliograph
he·li·og·ra·pher [hee-lee-og-ruh-fer] /ˌhi liˈɒg rə fər/, noun he·li·o·graph·ic [hee-lee-uh-graf-ik] /ˌhi li əˈgræf ɪk/, he·li·o·graph·i·cal, adjective he·li·o·graph·i·cal·ly, adverb he·li·og·ra·phy, nounWords nearby heliograph
heliocentric parallax,
heliochrome,
heliodor,
heliogabalus,
heliogram,
heliograph,
heliogravure,
heliolatry,
heliolithic,
heliometer,
heliopause
Example sentences from the Web for heliographic
British Dictionary definitions for heliographic
heliograph
/ (ˈhiːlɪəʊˌɡrɑːf, -ˌɡræf) /
noun
an instrument with mirrors and a shutter used for sending messages in Morse code by reflecting the sun's rays
a device used to photograph the sun