heliography
nounEtymology From helio- + -graphy.
1
The scientific study of the sun.
2
The art of making a heliograph.
3
The system of signalling by heliograph.
4
Obsolete Photography.
- Derived terms
- heliographical, photoheliography
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.