English Edit

Etymology Edit

From lengthen +‎ -ing.

Pronunciation Edit

Noun Edit

lengthening (plural lengthenings)

  1. The process of making or growing longer.
    • 2021 September 22, “National Rail Awards 2021: Train Lengthening”, in RAIL, number 940, page 56:
      This enabled an additional 15-20 containers to be carried per train, giving a 20% productivity gain, and was partly enabled by Network Rail completing the lengthening of loops on the route northwards from Southampton via Banbury.
  2. (phonology) a type of sound change when a sound (especially a vowel) lengthens

Derived terms Edit

Translations Edit

Verb Edit


  1. present participle and gerund of lengthen