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heliocentrism
[ hee-lee-uh-sen-triz-uhm ]
noun
- the astronomical theory in which the sun is at the center of a system that includes the earth and other planets, which revolve around it. Compare geocentrism ( def 1 ).
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Other Words From
- he·li·o·cen·trist noun adjective
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Word History and Origins
Origin of heliocentrism1
First recorded in 1875–80; heliocentr(ic) ( def ) + -ism ( def )
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