The Collaborative International Dictionary of English v.0.48:

Heliocentric \He`li*o*cen"tric\
   (h[=e]`l[i^]*[-o]*s[e^]n"tr[i^]k), Heliocentrical
\He`li*o*cen"tric"al\ (h[=e]`l[i^]*[-o]*s[e^]n"tr[i^]*kal), a.
   [Helio- + centric, centrical: cf. F. h['e]liocentrique.]
   (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.
   [1913 Webster]

   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.
      [1913 Webster]

WordNet (r) 3.0 (2006):

heliocentric
    adj 1: having the sun as the center [ant: geocentric]