open-hearth furnace

1. 1.

   a furnace for making steel in which the steel is placed on a shallow hearth and flames of burning gas and hot air play over it

   Broaderfurnace

Questions about open-hearth furnace

What does open-hearth furnace mean?

open-hearth furnace means "a furnace for making steel in which the steel is placed on a shallow hearth and flames of burning gas and hot air play over it".

Is open-hearth furnace a common word?

open-hearth furnace is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.