Dictionary.com
Thesaurus.com
Jump To:
  • exo-
    exo-
    a combining form meaning “outside,” “outer,” “external,” used in the formation of compound words.
  • exo
    exo
    adjective
    an informal word for excellent
  • exo–
    exo–
    A prefix that means “outside” or “external,” as in exoskeleton.

exo-

American  
  1. a combining form meaning “outside,” “outer,” “external,” used in the formation of compound words.

    exocentric.


exo 1 British  
/ ˈɛksəʊ /

adjective

  1. an informal word for excellent

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

exo- 2 British  

combining form

  1. external, outside, or beyond

    exobiology

    exothermal

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

exo– Scientific  
  1. A prefix that means “outside” or “external,” as in exoskeleton.


Etymology

Origin of exo-

< Greek, combining form of éxō outside

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

There are lots of senior K-pop idols performing at SMTown such as EXO, SHINee and Super Junior.

From Los Angeles Times • May 20, 2025

In the first season, the show relied on its judges’ star power to draw in an audience — namely Kris Wu, a Chinese Canadian singer and former member of the hit K-pop group EXO.

From Seattle Times • May 2, 2024

A former member of K-pop group EXO, the superstar returned to China in 2014 to pursue a solo career.

From Reuters • Jul. 25, 2023

Other accounts supporting K-pop acts Blackpink, GOT7 and EXO - who have Chinese members - were given 30-day bans.

From BBC • Sep. 7, 2021

He rose to fame as a member of the Korean pop band EXO, then started a successful solo career as a model, actor and singer.

From New York Times • Jul. 31, 2021

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "exo-" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com