Refers to steam as a physical substance, often in technical, cooking, or heating contexts. Common in compounds like スチームアイロン (steam iron) or スチームオーブン (steam oven).
Please heat this dish with steam.
Using a steam iron removes wrinkles well.
I applied steam to the clothes to remove the wrinkles.
Steaming vegetables with steam helps retain more vitamins.
Steam came out from the tip of the iron.