- a heliogram.
- a heliograph.
Origin of helio
- a combining form meaning “sun,” used in the formation of compound words: heliolatry.
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. 2018
Examples from the Web for helio
BREAKOUT MOMENT: Shaking her hips—Elvis be damned—during a too-hot-for-prime time samba with partner Helio Castroneves in 2007.Breakout Blondes
May 26, 2009
The helio was veiled in cloud, and there were no sounds of war.Story of the War in South Africa
Captain A. T. Mahan, U.S.N.
Waters and I have been in the helio room for the past hour, searching with the 'scope there.
In the helio cubby, Waters was still trying to raise an Earth station.
Hope was gone, and even the “helio” refused its communications.South Africa and the Transvaal War, Vol. IV (of 6)
They crowded the instrument room where the tense duty man sat bending over his helio receivers.
before a vowel heli-
- indicating the sunheliocentric; heliolithic
from Greek, from hēlios sun
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