Teräksisessä
Teräksisessä is a Finnish word derived from "teräs," meaning steel. It functions as an adessive case form of the word "teräs." In Finnish grammar, the adessive case typically indicates location, possession, or means. Therefore, "teräksisessä" can translate to phrases like "in steel," "on steel," or "with steel," depending on the context of the sentence.
For example, one might say "esine on teräksisessä laatikossa," meaning "the object is in a steel box."