Etymology

envelope

en·vel·ope
E1N1V4E1L1O1P3E1

Today it means: A paper or cardboard wrapper used to enclose small, flat items, especially letters, for mailing. Full definition →

French enveloppe
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envelope · noun, verb1

  1. French · borrowed fromenveloppe
  2. English todayenvelope

PIE word *h₁én From French enveloppe. The engineering sense is derived from flight envelope. The verb is from the noun.

envelope · verb2

See envelop.

Etymology from Wiktionary, CC BY-SA 4.0.