Etymology

abaxial

ab·ax·i·al
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Today it means: Of a side that is facing away from the axis or central line, such as the underside of a leaf, or the back of an animal. Full definition →

First used Mid 19ᵗʰ century.English axial ← Proto-Indo-European *h₂élisder.? ← Latin axis
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The story

  1. Proto-Indo-European*h₂ep
  2. Proto-Indo-European*h₂epó
  3. Proto-Italic*ap
  4. Latinab
  5. Latinab-
  6. Englishab-
  7. Proto-Indo-European*h₂eǵ-?
  8. Proto-Indo-European*h₂eḱs-
  9. Proto-Italic*aksis
  10. Latinaxis
  11. Englishaxis
  12. Proto-Indo-European*h₂el-
  13. Proto-Indo-European*h₂élisder.?
  14. Englishaxial
  15. English todayabaxial

From ab- (“away from”) + axial (“axis”).

First known use, by meaning

  • Mid 19ᵗʰ century. Of a side that is facing away from the axis or central line, such as the underside of a leaf, or the back of an animal.

Etymology from Wiktionary, CC BY-SA 4.0.