HELI-

I. combining form

or helio-

Etymology: Latin, from Greek hēli-, hēlio-, from hēlios — more at solar

: sun

Heli ornis

: the sun

helio centric

helio scope

: sunlight : solar energy

helio gravure

: sun and

helio lithic

II. combining form

Etymology: by shortening

: helicopter

heli port

heli mail