Etymology

pseudodifferential

Today it means: Describing an extension to differential calculus that deals with Fourier transforms and similar structures. Full definition →

English differential ← Latin differentiāli ← Proto-Indo-European *h₂élisder.?
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The story

  1. Ancient Greekψεύδω (pseúdō)
  2. Ancient Greekψευδής (pseudḗs)
  3. Middle Englishpseudo-
  4. Englishpseudo-
  5. Proto-Indo-European*dwóh₁
  6. Proto-Indo-European*trísinflu.
  7. Proto-Indo-European*d(w)is-
  8. Proto-Italic*dis-
  9. Latindis-
  10. Proto-Indo-European*bʰer-
  11. Proto-Indo-European*bʰéreti
  12. Proto-Italic*ferō
  13. Latinferō
  14. Latindifferō
  15. Latindifferēns
  16. Latindifferentia
  17. Proto-Indo-European*h₂el-
  18. Proto-Indo-European*h₂élisder.?
  19. Latindifferentiāli
  20. Englishdifferential
  21. English todaypseudodifferential

From pseudo- + differential.

Etymology from Wiktionary, CC BY-SA 4.0.