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Synonyms for

Exo

Prefix Another word for exo — explore alternatives below. For syllable breakdowns and pronunciation, see this word on Syllablesworld.

Definition

Exo is a prefix meaning 'outside' or 'external'.

external outward exterior outer beyond foreign alien other distant remote far removed

The exosphere is the outermost layer of the Earth's atmosphere.
Exoplanets are planets that orbit stars outside of our solar system.
Exoskeletons are hard outer coverings that protect and support the bodies of some animals.
The company hired an external consultant to help improve their business strategy.
The spacecraft was sent on an exoatmospheric mission to study the stars.

I'm not an exo-planet, I'm your wife!
I think we need an exo-skeleton.
Exo-terra is science fiction, but it's science fiction that's based on science fact.

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