Home › Words › T › tonnetonne/tʌn/tonne · name — A surname from German.Definition from Wiktionary (CC BY-SA 3.0).tonne is pronounced /tʌn/.EtymologyBorrowed from German Tonne.nameA surname from German.nounA unit of mass equal to 1000 kilograms.e.g.“Although loads of up to 900 tonnes could be handled by one of these locomotives, in practice the load is limited to 790 tonnes by drawgear.” — 1961 February, “Letters to the Editor: Swiss railways”, in Trains Illustrated, page 126:Definitions & examples from Wiktionary (CC BY-SA 3.0).