variants: or helio-

Definition of heli-

 (Entry 1 of 2)

: sun heliocentric

Definition of heli- (Entry 2 of 2)

: helicopter heliport

History and Etymology for heli-

Combining form (1)

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

Combining form (2)

by shortening

Keep scrolling for more

Learn More about heli-

Statistics for heli-

Cite this Entry

“Heli-.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heli-. Accessed 10 Jul. 2020.

Comments on heli-

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

WORD OF THE DAY

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a closeup of a sunflower
  • Which of the following words means “of or relating to summer”?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Dictionary Devil

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!