From The Collaborative International Dictionary of English v.0.44 [gcide]:
Heliographic \He'li*o*graph"ic\ (h[=e]'l[i^]*[-o]*gr[a^]f"[i^]k), adjective (Astron.)
1. Of or pertaining to a description of the sun. [Webster 1913 Suppl.]
Note: Heliographic longitudes and latitudes of spots on the sun's surface are analogous to geographic longitudes and latitudes of places on the earth. [Webster 1913 Suppl.]
2. Of or pertaining to heliography or a heliograph; made by heliography.
{Heliographic chart}. See under {Chart}.
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