definitions

helio-

a combining form meaning “sun,” used in the formation of compound words: heliolatry.

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Nearby words

heliculture, helideck, heliencephalitis, heligoland, helio, helio-, heliocentric, heliocentric parallax, heliochrome, heliodor, heliogabalus
Also especially before a vowel, heli-.

Origin of helio-

< Greek, combining form of hḗlios sun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for helio-

helio-

before a vowel heli-

combining form

indicating the sunheliocentric; heliolithic

Word Origin for helio-

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