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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-.

Other Word Forms

Noun Inflected Forms

• helios
  plural

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Etymology

Origin of helio¹

By shortening

Origin of helio-²

< Greek, combining form of hḗlios sun

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Example Sentences

See Examples For:

helio helios

A winking electric helio on one of them spits out a message to the leader of the destroyers, and she flashes answer and acknowledgment as readily as though the seaplane were a sister craft.

From Merchantmen-at-arms : the British merchants' service in the war by David W. (David William) Bone

The helio station in the Great City was now reinstated.

From Tarrano the Conqueror by Ray Cummings

A helio car swung down in front of the school.

From There Will Be School Tomorrow by V. E. Thiessen

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

From For the School Colours by Angela Brazil

You will turn over to me all the information you can about the I. F. P. helio code.

From The Martian Cabal by Roman Frederick Starzl

“Heliothraupis,” they wrote, combines the Greek helios, for “sun,” with thraupis, “meaning ‘finch’ or ‘small bird,’ but in current usage usually referring to tanagers.”

From Slate ● Nov. 20, 2021

And above its dome, opened to the sky, wherein the intensified helios shaded so that no ray of them might blind the operators, were sputtering as though eager to be away with their messages.

From Tarrano the Conqueror by Ray Cummings

Soon we were beyond reach of all messages save helios, which were not in operation.

From Tarrano the Conqueror by Ray Cummings

Flag-signallers were preparing for work at the place where the day before helios had been busy flashing news from gunboats and cavalry to the headquarters.

From Khartoum Campaign, 1898 or the Re-Conquest of the Soudan by Bennet Burleigh

The helios up there were humming and sputtering loudly.

From Tarrano the Conqueror by Ray Cummings

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