Heliograph

Definition:

• (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.

Compare heliograph with other words:

helicograph vs. heliograph

heliograph vs. photoheliograph

heliograph vs. heliography

heliograph vs. heliographic

heliograph vs. message

heliograph vs. photograph

heliograph vs. sun

heliograph vs. photographing

device vs. heliograph

heliograph vs. intensity

heliograph vs. measuring

heliograph vs. instrument

heliograph vs. sunlight

flashes vs. heliograph

heliograph vs. mirror

heliograph vs. signalling

apparatus vs. heliograph