muscle system muscle spasm • muscle-tired · · · Info · Definitions · Synonyms · Characters · · muscle system · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) the muscular system of an organism. Synonyms: muscular structure, musculature, muscle system. · · Noun Definition 1 Synonyms · · · muscular structure · · Synonym 1 musculature · · Synonym 2 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 l latin small letter l U+006C m latin small letter m U+006D s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079