he·lio·graph·ic /ˌhiliəˈgræfɪk/
He·li·o·graph·ic a. Astron.
1. Of or pertaining to a description of the sun.
Note: ☞ Heliographic longitudes and latitudes of spots on the sun's surface are analogous to geographic longitudes and latitudes of places on the earth.
2. Of or pertaining to heliography or a heliograph; made by heliography.
Heliographic chart. See under Chart.
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