Open-hearth meaning

ōpən-härth
Designating a furnace with a wide, saucer-shaped hearth and a low roof, used in making steel.
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Relating to or being a reverberatory furnace used in the production of high-quality steel.
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Using a furnace of this kind.

The open-hearth process.

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Describing a reverberatory furnace used to make high-quality steel.
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Designating the steel so produced.
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