Open-hearth process Meaning, Definition & Usage

  1. noun a process for making steel using an open-hearth furnace

WordNet

Definitions
  1. (Steel Manuf.), a process by which melted cast iron is converted into steel by the addition of wrought iron, or iron ore and manganese, and by exposure to heat in an open-hearth furnace; also called the Siemens-Martin process, from the inventors.

Webster 1913