manganese steel manganese spar • manganese tetroxide · · · Info · Definitions · Synonyms · Characters · · manganese steel · · Text Common · · Latin · · Scripts 15 · · Length Definitions · · · (noun) a steel with a relatively large component (10-14%) of manganese; highly resistant to wear and shock. Synonyms: austenitic manganese steel. · · Noun Definition 1 Synonyms · · · manganese · · Synonym 1 mn · · Synonym 2 atomic number 25 · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074