adjective Astronomy.
  1. measured or considered as being seen from the center of the sun.
  2. having or representing the sun as a center: the heliocentric concept of the universe.

Origin of heliocentric

First recorded in 1660–70; helio- + -centric
Related formshe·li·o·cen·tri·cal·ly, adverbhe·li·o·cen·tric·i·ty [hee-lee-oh-sen-tris-i-tee] /ˌhi li oʊ sɛnˈtrɪs ɪ ti/, he·li·o·cen·tri·cism [hee-lee-oh-sen-truh-siz-uh m] /ˌhi li oʊˈsɛn trəˌsɪz əm/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for heliocentricity


  1. having the sun at its centre
  2. measured from or in relation to the centre of the sun
Derived Formsheliocentrically, adverbheliocentricity or heliocentricism, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for heliocentricity



1680s, from helio- + -centric.

Online Etymology Dictionary, © 2010 Douglas Harper

heliocentricity in Science


  1. Relating to or measured from the center of the Sun.
  2. Relating to a model of the solar system or universe having the Sun as the center. Compare geocentric. See Note at Copernicus.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.