![open-hearth process open-hearth process](https://www.tekportal.net/wp-content/uploads/2018/12/open-hearth-process.jpg)
noun
- a process of steelmaking in which the charge is laid in a furnace (open-hearth furnace) on a shallow hearth and heated directly by burning gas as well as radiatively by the furnace walls.
noun
- a process for making steel using an open-hearth furnace