\He`li*o*graph"ic\, a.
Of or pertaining to heliography or a heliograph; made by
heliography.
{Heliographic chart}. See under {Chart}.

\He`li*o*graph"ic\, a. (Astron.)
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.