Heliograph(n.) A picture taken by heliography; a photograph.
Heliograph(n.) An instrument for taking photographs of the sun.
Heliograph(n.) An apparatus for telegraphing by means of the sun's rays. See Heliotrope, 3.
Heliographic(a.) Of or pertaining to heliography or a heliograph; made by heliography.

Words within heliographing