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From: Webster's Revised Unabridged Dictionary (1913)

 He·li·o·cen·tric He·li·o·cen·tric·al a.  Astron. pertaining to the sun's center, or appearing to be seen from it; having, or relating to, the sun as a center; -- opposed to geocentrical.
 Heliocentric parallax. See under Parallax.
 Heliocentric place, latitude, longitude, etc. (of a heavenly body), the direction, latitude, longitude, etc., of the body as viewed from the sun.
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