helio

¹ American  

[hee-lee-oh] / ˈhi liˌoʊ /

noun

Informal.

plural

helios

1. a heliogram.

2. a heliograph.

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helio- ² American  

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

   heliolatry.

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helio- British  

combining form

1. indicating the sun

   heliocentric

   heliolithic

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Usage

What does helio- mean? Helio- is a combining form used like a prefix meaning “sun.” It is frequently used in a variety of scientific and technical terms. Helio- comes from Greek hḗlios, meaning “sun.” The Latin cognate, sōl, is the source of several words related to the sun, such as solar and solstice. What are variants of helio-?When combined with words or word elements that begin with a vowel, helio- becomes heli-, as in heliencephalitis. Want to know more? Read our Words That Use article for heli-.

Etymology

Origin of helio¹

By shortening

Origin of helio-²

< Greek, combining form of hḗlios sun

Example Sentences

At 6.30 a.m. a helio message was received calling the column at once back to Krugersdorp, and a start was made for the return journey at 8 a.m.

From The Second Battalion Royal Dublin Fusiliers in the South African War With a Description of the Operations in the Aden Hinterland by Romer, Cecil Francis

"I want the helio, please," said Avelyn doggedly.

From For the School Colours by Brazil, Angela

While coming along this afternoon we saw something like helio signals flashing in the air.

From Uncle Sam's Boys as Sergeants or, Handling Their First Real Commands by Hancock, H. Irving (Harrie Irving)

I only know bare facts; the news came by helio.

From Captain Desmond, V.C. by Diver, Maud