noun / adjective

iron

EYE-ern/ˈaɪərn/

A strong gray metal essential in small amounts to the body.

Your body needs small amounts of iron to stay healthy.

A heavy gray iron bar, a cast-iron skillet, and large iron nails show the metal as raw stock and familiar useful objects; small reddish-brown rust patches reinforce its identity.
Etymology

The Old English word already named both the metal and a weapon or implement made from it. The modern metal sense preserves that old material name; its deeper origin is uncertain.

In context

Factory Secrets: How It's Made156:38
So iron gets freed from minerals through engineering processes that demand extreme temperatures and chemical reactions. This aggressive approach is what transforms the iron buried in ores into strong metal
The World's Heaviest Metal: Turning Industrial Sludge into Fortune

More examples

  • Iron rusts when exposed to air and moisture.
  • A heavy iron gate blocks the entrance.
  • She faces every setback with an iron will.

Forms

iron

Similar words

steel
An alloy containing iron, usually harder than the pure metal.
unyielding
Like figurative iron, describes firmness that resists pressure or persuasion.