重じゅう噸とんじ字FuriganaMeanings1nounlong tonA unit of weight equal to 2,240 pounds (1,016 kg), used primarily in the UK and Commonwealth countries. In Japanese, it is a technical term often encountered in shipping, trade, or engineering contexts.この船ふねの積せき載さい量りょうは5ご万まん重じゅう噸とんです。This ship's cargo capacity is 50,000 long tons.重じゅう噸とんはメートルトンとは異ことなります。A long ton is different from a metric ton.