1

heli-

combining form
variants: or helio-

Definition of heli-

: sun
  • heliocentric

Origin and Etymology of heli-

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


2

heli-

combining form

Definition of heli-

: helicopter
  • heliport

Origin and Etymology of heli-

by shortening


Seen and Heard

What made you want to look up heli-? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

formed or used for a special purpose

Get Word of the Day daily email!

Test Your Vocabulary

February 2018 Words of the Day Quiz

  • a-dog-in-snow-jumping-to-grab-a-heart-shaped-balloon-the-snow-and-heart-balloon-indicate-that-the-month-being-represented-is-april-and-the-dog-is-just-kinda-cute
  • Which is a synonym of sanguine?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!