Dictionary Home »
Dictionary Definitions » heliograph
heliograph
noun
- a permanent image formed on a glass plate by an early photographic process
- a device for sending messages or signaling by flashing the sun's rays from a mirror
transitive verb, intransitive verb
to signal or communicate by heliograph
Related Forms:
- heliographer noun
- heliographic adjective
- heliography noun
See heliograph in American Heritage Dictionary 4
Learn more about heliograph
link/cite print suggestion box