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helio-

1.
a combining form meaning “sun,” used in the formation of compound words:
heliolatry.
Also, especially before a vowel, heli-.
Origin
< Greek, combining form of hḗlios sun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for helio-

helio-

combining form
1.
indicating the sun: heliocentric, heliolithic
Word Origin
from Greek, from hēlios sun
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
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Word Origin and History for helio-

word-forming element meaning "sun," from Greek helio-, comb. form of helios "sun" (see sol).

Online Etymology Dictionary, © 2010 Douglas Harper
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Difficulty index for helio-

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Word Value for helio

8
8
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