exo-

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exo-

  • /ɛksoʊ-/ US
  • /ɛksəʊ-/ UK

Where it comes from

Etymology tree

Ancient Greek ἐκ (ek)

Ancient Greek ἔξω (éxō)der.

English exo-

From Ancient Greek ἔξω (éxō, “outer; external”).

prefix

  1. morpheme outside; external
  2. morpheme extrasolar; beyond the Solar System (our solar system) exo- + planet → exoplanet

Similar: out-, ex-, ecto-

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