to melt (of ice, metals etc)

smelting furnace; forge

to smelt; to fuse

(of fuse wire) to melt; to blow; (fig.) to halt stock trading; (fig.) to suspend an airline from operating flights on a given route (as a penalty, e.g. for bringing in more than a specified number of passengers who test positive for COVID)

weld nugget

meltdown; (of nuclear fuel) to melt down

lava, magma or other molten material (metal, glass etc)

slag (smelting)

melting point

to smelt

to melt; to fuse

fusion

flux

lit. large smelting furnace; fig. the mixing of different ethnicities and cultures; Melting Pot

hot-melt adhesive; hot glue

melting point

lava flow

lava lake

fuse wire

furnace

(geology) pillow lava

magma dome

(finance) trading curb; circuit breaker

basalt; also written 玄熔岩[xuan2 rong2 yan2]