Home › Words › S › steamfittingsteamfittingsteamfitting means A part used in the piping for steam.EtymologyFrom steam + fitting.nounA part used in the piping for steam.The act or occupation of installing and maintaining piping for steam.e.g.“Steamfitting can be a dangerous task, because the steam is under great pressure.”Definitions & examples from Wiktionary (CC BY-SA 3.0).