Etymology

exoplanar

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Today it means: Describing an atom or group that is outside the major plane of a molecule (especially of a cyclic molecule) Full definition →

English planar ← Ancient Greek ἔξω (éxō)
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The story

  1. Ancient Greekἐκ (ek)
  2. Ancient Greekἔξω (éxō)
  3. Englishexo-
  4. Englishplanar
  5. English todayexoplanar

From exo- + planar.

Etymology from Wiktionary, CC BY-SA 4.0.