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shipping ton

 - 4 dictionary results

ton

1[tuhn] ,
–noun
1. a unit of weight, equivalent to 2000 pounds (0.907 metric ton) avoirdupois (short ton) in the U.S. 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. Often, tons. Informal. a great quantity; a lot: a ton of jokes; tons of wedding presents.
8. British Informal. a speed of 100 miles per hour.

Origin:
1350–1400; ME; var. of tun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

ton 
1379, tonne, unit for measuring the carrying capacity of a ship, originally "space occupied by a tun or cask of wine," thus identical to tun (q.v.). The two words were not differentiated until c.1688. The measure of weight is first recorded 1485; the spelling ton is from 1538, and became firmly established 18c. Tonnage (1422) was originally "tax or duty on wine imported in tuns." Modern tonne (1877) is the Fr. form of the word, adopted for Eng. use to denote a metric ton (1,000 kg.).
Online Etymology Dictionary, © 2001 Douglas Harper
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Science Dictionary
ton   (tŭn)  Pronunciation Key 
  1. A unit of weight in the US Customary System equal to 2,000 pounds (900 kilograms). Also called short ton. See Table at measurement.

  2. A unit of weight in the US Customary System equal to 2,240 pounds (1,008 kilograms). Also called long ton. See Table at measurement.

  3. See metric ton.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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