sponge iron
noun
finely divided, porous iron, reduced from an oxide at a temperature below the melting point.
Also called
iron sponge.
Origin of sponge iron
First recorded in 1870–75
Words nearby sponge iron
sponge bag,
sponge bath,
sponge cake,
sponge cloth,
sponge down,
sponge iron,
sponge on,
sponge rubber,
sponge tree,
sponged ware,
spongefly