熔く[toku] to dissolve (paint)
熔ける[tokeru] to melt
熔岩[yougan] lava
熔鉱炉[youkouro] smelting furnace
熔接[yousetsu] weld

熔融[youyuu] melting
熔解[youkai] melting
熔銑[yousen] molten iron
炉心熔融[roshinyouyuu] core meltdown
熔滓[youshi] slag

一念発起[ichinenhokki] being resolved to (do something)
引き起す[hikiokosu] to cause
縁起[engi] omen
喚起[kanki] arousal
起きる[okiru] to get up

起上る[okiagaru] to rise
起す[okosu] to raise
起こり得る[okoriuru] to be possible to occur
起る[okoru] to occur
起つ[tatsu] to rise up