sponge iron
noun
finely divided, porous iron, reduced from an oxide at a temperature below the melting point.
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
Origin of sponge iron
First recorded in 1870–75
Also called iron sponge.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019