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 sixty thousand feet the helio vanes were useless, only the power of the auxiliary rocket-tubes maintained his altitude.

From When the Sleepers Woke by Zagat, Arthur Leo

I wondered what the Martian helio might be saying.

From Tarrano the Conqueror by Cummings, Ray

The helio was slanting downward, and was now less than five miles distant from the fast vanishing bus.

From The Women-Stealers of Thrayx by Holden, Fox B.

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

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 Bone, David W. (David William)