Etymology

exponential

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Today it means: Expressed in terms of an exponent (power of a base), the base often being 10 or e. Full definition →

Proto-Indo-European *h₂élisder.? ← English exponent
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The story

  1. Englishexponent
  2. Proto-Indo-European*h₂el-
  3. Proto-Indo-European*h₂élisder.?
  4. English todayexponential

From exponent + -ial.

Etymology from Wiktionary, CC BY-SA 4.0.