Definify.com
Webster 1913 Edition
Heliograph
He′li-o-graph
(hē′lĭ-ō̍-grȧf)
, Noun.
[
Helio-
+ -graph
.] 1.
A picture taken by heliography; a photograph.
2.
An instrument for taking photographs of the sun.
3.
An apparatus for telegraphing by means of the sun’s rays. See
Heliotrope
, 3. 2.
Of or pertaining to heliography or a heliograph; made by heliography.
Heliographic chart
. See under
Chart
.4.
Photography.
[Archaic.]
R. Hunt.