Definition of tonne noun from the Oxford Advanced Learner's Dictionary



BrE BrE//tʌn//
; NAmE NAmE//tʌn//
(pl. tonnes, tonne) (also metric ton)
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a unit for measuring weight, equal to 1 000 kilograms a record grain harvest of 236m tonnes a 17-tonne truck compare ton Word Originlate 19th cent.: from French; compare with ton.
See the Oxford Advanced American Dictionary entry: tonne