Etymology

tonnage

T1O1N1N1A1G2E1

Today it means: The number of tons of water that a floating ship displaces. Full definition →

Old French tonnage
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The story

  1. Old French · derived fromtonnage
  2. English todaytonnage

From Old French tonnage. Equivalent to tonne + -age.

Etymology from Wiktionary, CC BY-SA 4.0.