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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:

Under the ETS, Europe's industries and power plants are required to buy a permit, or allowance, for every tonne of carbon dioxide they emit, creating a financial incentive to invest in cleaner technologies.

From BBC Jul. 17, 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

Strategists at the investment bank see gold rising to $4,900 a tonne by the end of the year instead of $5,400.

From The Wall Street Journal Jun. 19, 2026

Central Beacons Mountain Rescue Team removed more than a tonne of waste from Bwlch Mountain, a Rhondda Cynon Taf beauty spot, over the weekend.

From BBC Jun. 1, 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

The cumulus becomes a much larger cloud, containing thousands of tonnes of suspended water.

From Barron's Jul. 27, 2026

Production in Ireland was launched in 1983, and the company says it produces around 1.9 million tonnes of alumina a year at the plant.

From Barron's Jul. 24, 2026

The charity said it lost 16 tonnes of food - the equivalent of 7,000 meals.

From BBC Jul. 23, 2026

In 2024, the UK imported nearly 7 million tonnes of steel.

From BBC Jul. 17, 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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