e-fold

US/ˈiːfoʊld/UK/ˈiːfəʊld/Australia, New Zealand/ˈiːfaʉld/

adjective

Multiplied by e.

“Thus, over the scale time, there is an e-fold likelihood of increase as compared to decrease.”

Meanings

adjectivee-fold (not comparable)
  1. not comparablesciencesMultiplied by e.

    Thus, over the scale time, there is an e-fold likelihood of increase as compared to decrease.

  2. not comparablesciencesConferring multiplication by e.

    So while some vertices have two children and others three, in the long run we can expect e-fold branching.

adverbe-fold (not comparable)
  1. not comparablesciencese times.
noune-fold (plural e-folds)

plural e-folds

  1. sciencesA multiplication by a power of e.
    1 more example

    An obvious difference between plateau-like models like this and the simplest inflationary models, like V(#92;phi)#61;#92;lambda#92;phi⁴, is that the simplest models require only one parameter and absolutely no tuning of parameters to obtain 60 or more e-folds of inflation, while the plateau-like models require three or more parameters and must be fine-tuned to obtain even a minimal amount of inflation.

    2013, Anna Iijas, Abraham Loeb, Paul Steinhardt, “Inflationary Paradigm in trouble after Planck 2013”, in Phys. Lett. B, volume 723, numbers 4–5, →Bibcode, →DOI, page 262

Origin

Cite this entry
APA

e-fold. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/e-fold

MLA

“e-fold.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/e-fold. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “e-fold,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/e-fold.

Source: e-fold on Wiktionary, CC BY-SA 4.0.