ようだん 溶断 LinksSentence search for 溶断Sentence search for ようだんKanji details for 溶 and 断Edit in JMdict Noun, Suru verb, Transitive verb, Intransitive verb1. fusion cutting (of metals); plasma cuttingNoun, Suru verb, Transitive verb, Intransitive verb2. blowout (of a fuse) Discussions Log in to talk about this word.