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tonne

American  
[tuhn] / tʌn /

noun

  • tonnes
    plural
  1. metric ton.


tonne British  
/ tʌn /

noun

  1. Also called (not in technical use): metric ton. a unit of mass equal to 1000 kg or 2204.6 pounds

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms


Etymology

Origin of tonne

From French, dating back to 1900–05; see origin at ton 1


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Over a 36-hour period more than a tonne of oil was released into Thornton Brook and spread to the Mersey Estuary.

From BBC ● Oct. 6, 2026

Launching a tonne of cargo can cost tens of millions of pounds, while a trip to Mars usually takes between six and nine months, depending on the positions of Earth and Mars in their orbits.

From Science Daily ● Aug. 7, 2026

As the hulking metal cage, weighing more than a tonne, was lowered from the truck and wheeled into the museum, the gathering burst into applause.

From Barron's ● Jul. 10, 2026

But then gradually fell to 2,846 dollars a tonne through 2025 and early 2026.

From Barron's ● Jul. 9, 2026

Weighing up to a tonne, the Erumpent may be mistaken for a rhinoceros at a distance.

From "Fantastic Beasts and Where to Find Them" by J.K. Rowling

Russia said on Thursday that it had prepared "dozens of tonnes" of aid for the residents who do not wish to leave, including food, medicine, hygiene products and fuel for generators.

From BBC ● Oct. 30, 2026

With space for 6,500 tonnes of uranium, Onkalo will provide permanent storage for spent fuel from Finland's five nuclear reactors.

From Barron's ● Oct. 22, 2026

Global production of tungsten is estimated 85,000 tonnes in 2025, according to a US government estimate, a fraction of the figure for metals like copper or nickel.

From Barron's ● Oct. 21, 2026

SS Montgomery was loaded with 7,000 tonnes of munitions in 1944 and directed to anchor off Sheerness, Kent, but grounded on a sandbank.

From BBC ● Oct. 19, 2026

It weighs between two and four tonnes, the female being larger than the male.

From "Fantastic Beasts and Where to Find Them" by J.K. Rowling

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