ton1
Pronunciation: /tʌn/
(abbreviation: t, also US tn)
noun
- 1 (also long ton) a unit of weight equal to 2,240 lb avoirdupois (1016.05 kg).
- (also short ton) chiefly North American a unit of weight equal to 2,000 lb avoirdupois (907.19 kg).
- short for metric ton.
- (also displacement ton) a unit of measurement of a ship’s weight representing the weight of water it displaces with the load line just immersed, equal to 2,240 lb or 35 cu. ft (0.99 cubic metres).
- (also freight ton) a unit of weight or volume of sea cargo, equal to a metric ton (1,000 kg) or 40 cu. ft.
- 2 (also gross ton) a unit of gross internal capacity, equal to 100 cu. ft (2.83 cubic metres).
- (also net or register ton) an equivalent unit of net internal capacity.
- a measure of capacity for various materials, especially 40 cu. ft of timber.
- a unit of refrigerating power able to freeze 2,000 lb of water at 0°C in 24 hours.

Phrases
-
like a ton of bricks
- see brick.

Origin:
Middle English: variant of tun, both spellings being used for the container and the weight. The senses were differentiated in the late 17th century