also: へいろ
open-hearth furnace
Technical term in metallurgy; a type of furnace used for steelmaking.
The open-hearth furnace was once a major facility for steelmaking.
Standard kanji form for 'open-hearth furnace'.
Alternate reading; less common than ひらろ.
Compound of 平 (flat) and 炉 (furnace), describing the shallow hearth design.