open-hearth process open-hearth furnace • open-heart surgery · · · Info · Definitions · Characters · · open-hearth process · · Text Common · · Latin · · Scripts 19 · · Length 5 · · Syllables Definitions · · · (noun) a process for making steel using an open-hearth furnace. Synonyms: open-hearth process. · · Noun Definition 1 Characters · · space U+0020 - hyphen-minus U+002D a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074