long ton

7.5

A British unit of weight equal to 2,240 pounds

noun
/lɒŋ tɒn/

: tonelada larga

However, they are very economical and reliable for processing large acid gas streams (50+ long tons per day (LTPD)) and producing high-purity sulfur.

Examples

The cargo ship can carry up to 1,000 long tons of goods without overloading.
The bridge was designed to support a maximum weight of 500 long tons.
Last week, the construction project required an additional 200 long tons of steel for reinforcement.

Synonyms

ton

vslong ton

310 1.9

A British measure of weight equal to 2,240 pounds

is the formal imperial term for that same weight

gross ton

vslong ton

Archaic

1 7.2

A British unit of weight equal to 2,240 pounds used in shipping

is the same weight but used generally outside shipping contexts

How Heavy

long ton

7.5

hundredweight

1 8.4

stone

27 4.4

pound

∞ 1.0

Surface Forms

long ton singular

long tons plural

Morphology

long + ton

The phrase is a compositional modifier: 'long' + 'ton' signals a specific kind of ton rather than an unrelated idiomatic meaning. A B1 learner who knows 'ton' as a unit of weight and 'long' as a modifier would readily infer this denotes a particular (larger/British) ton even if they don't know the exact pound/kg value.

Etymology

Long ton comes from old ship trade: a ton was once the weight of a large wine barrel carried on ships, and Britain used a heavier size. So today a long ton is 2,240 pounds, which is bigger than the American 'short ton'.