[] ( tonsorton) a unit for measuring weight, in the UK 2 240 pounds or 1016.04 kilograms (long ton) and in the US 2 000 pounds or 907.18 kilograms ( short ton)吨（英国为 2240 磅或 1016.04 公斤，即长吨；美国为 2000 磅或 907.18 公斤，即短吨）◆The plant turns out up to 630 000 tons of aluminium annually.这家工厂年产铝达 63 万吨。a unit for measuring the size of a ship. One ton is equal to 100 cubic feet吨位（船舶大小的计量单位，1 吨等于 100 立方英尺）◆A 10 000-ton vessel can be unloaded in 10 hours.一艘万吨级的轮船 10 小时即可卸完货。long ton metric ton net ton short ton