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  • ton
    ton
    noun
    a unit of weight, equivalent to 2000 pounds (0.907 metric ton) avoirdupois short ton, or net ton in the United States and 2240 pounds (1.016 metric tons) avoirdupois long ton in Great Britain.
  • -ton
    -ton
    a suffix formerly used to form nouns from adjectives.
Synonyms

ton

1 American  
[tuhn] / tʌn /

noun

  1. a unit of weight, equivalent to 2000 pounds (0.907 metric ton) avoirdupois short ton, or net ton in the United States and 2240 pounds (1.016 metric tons) avoirdupois long ton in Great Britain.

  2. Also called freight ton.  a unit of volume for freight that weighs one ton, varying with the type of freight measured, as 40 cubic feet of oak timber or 20 bushels of wheat.

  3. metric ton.

  4. displacement ton.

  5. a unit of volume used in transportation by sea, commonly equal to 40 cubic feet (1.13 cu. m) shipping ton, or measurement ton.

  6. a unit of internal capacity of ships, equal to 100 cubic feet (2.83 cu. m) register ton.

  7. Informal. Often tons a great quantity; a lot.

    a ton of jokes;

    tons of wedding presents.

  8. British Informal. a speed of 100 miles per hour.


ton 2 American  
[ton, tawn] / tɒn, tɔ̃ /

noun

  1. high fashion; stylishness.

  2. the current fashion, style, or vogue.

  3. (used with a singular or plural verb) the ton, fashionable society.


-ton 3 American  
  1. a suffix formerly used to form nouns from adjectives.

    simpleton; singleton.


ton 1 British  
/ tʌn /

noun

  1. slang a score or achievement of a hundred, esp a hundred miles per hour, as on a motorcycle

"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

ton 2 British  
/ tɔ̃ /

noun

  1. style, fashion, or distinction

"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

ton 3 British  
/ tʌn /

noun

  1. Also called: long ton.  a unit of weight equal to 2240 pounds or 1016.046909 kilograms

  2. Also called: short ton.   net ton.  a unit of weight equal to 2000 pounds or 907.184 kilograms

  3. Also called: metric ton.   tonne.  a unit of weight equal to 1000 kilograms

  4. Also called: freight ton.  a unit of volume or weight used for charging or measuring freight in shipping. It depends on the type of material being shipped but is often taken as 40 cubic feet, 1 cubic metre, or 1000 kilograms

    freight is charged at £40 per ton of 1 cubic metre

  5. Also called: measurement ton.   shipping ton.  a unit of volume used in shipping freight, equal to 40 cubic feet, irrespective of the commodity shipped

  6. Also called: displacement ton.  a unit used for measuring the displacement of a ship, equal to 35 cubic feet of sea water or 2240 pounds

  7. Also called: register ton.  a unit of internal capacity of ships equal to 100 cubic feet

"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

ton Scientific  
/ tŭn /
  1. A unit of weight in the US Customary System equal to 2,000 pounds (900 kilograms).

  2. Also called short ton

  3. See Table at measurement

  4. A unit of weight in the US Customary System equal to 2,240 pounds (1,008 kilograms).

  5. Also called long ton

  6. See Table at measurement

  7. See metric ton


ton Idioms  

Other Word Forms

Etymology

Origin of ton1

First recorded in 1350–1400; Middle English; variant of tun

Origin of ton2

First recorded in 1760–70; from French, from Latin tonus tone

Origin of -ton3

Variant of dial. tone one ( see tother)

Explanation

The ton is a unit of measurement. In North America, a ton is 2,000 pounds. Elephants weigh several tons — and blue whales can weigh up to 200 tons! Although a ton is a specific way to measure weight, the word is often used more generally to mean "a whole bunch" or "a lot." So if your friend promises that her dad made a ton of cupcakes, don't be disappointed when you get to her house and discover only a few dozen. The original ton, spelled tun, was "enough to fill a tun (or cask) of wine."

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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.

Participating companies must surrender one carbon allowance for each metric ton of CO₂-equivalent they produce.

From The Wall Street Journal • May 22, 2026

AmInvestment Bank sees resistance at 4,520 ringgit a ton and support at 4,390 ringgit a ton.

From The Wall Street Journal • May 22, 2026

“We need you to bring in a ton of money from people who owe it. Not a ton of technology.”

From MarketWatch • May 20, 2026

“We need you to bring in a ton of money from people who owe it. Not a ton of technology.”

From MarketWatch • May 20, 2026

Somebody in her family must’ve donated a ton of money to Chumley Prep.

From "Shine!" by J.J. and Chris Grabenstein

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