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• helio
  helio

  noun

  a heliogram.
• helio-
  helio-

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

helio

¹ American  

[hee-lee-oh] / ˈhi liˌoʊ /

noun

Informal.

helios plural

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

The message that the helio twinkled out was as follows: "Thirty large vessels, apparently transports, approaching from direction of Cherbourg and Brest about ten miles south-east by south."

From The World Peril of 1910 by Griffith, George Chetwynd

Prob’ly his old lookin’-glass telegraft is busted,” he added, with slighting reference to the Jerusalem helio.

From King Spruce, A Novel by Day, Holman

"But why should you want helio when you know it doesn't suit you?" stormed Daphne.

From For the School Colours by Brazil, Angela

Venus, now at 8:44 was calling us by helio.

From Tarrano the Conqueror by Cummings, Ray