fuse

Pure sodium is a lustrous metal... it fuses very easily at a temperature of 97°, and distils at a bright red heat (742°...)

Actually the New York, New Haven and Hartford, Boston & Maine, Maine Central, Bangor & Aroostook and Rutland Railroads already are doing so; if they are fused, they would have a combined route mileage of 5,269 and assets totalling £318 million, ….

When the bath overflowed, the downstairs lights fused, so we need a torch.