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  • 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  

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 2 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– 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.

See Examples For:

Instead, users can don the "exo" and go.

From Science Daily Mar. 20, 2024

The exo suit helps considerably when being surrounded.

From Washington Times Jan. 31, 2015

If you die, you respawn in the next round without an exo suit.

From Washington Times Jan. 31, 2015

It comes from the Greek exotikos, “foreign,” which in turn comes from the prefix exo, meaning “outside.”

From The New Yorker Nov. 3, 2014

An acceptilation can be made in Greek, provided the form corresponds to that of the Latin words, as 'exeis labon denaria tosa; exo labon.'

From The Institutes of Justinian by John Baron Moyle

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