sine curve sine bar • sine die · · · Info · Definitions · Synonyms · Characters · · sine curve · · Text Common · · Latin · · Scripts 10 · · Length Definitions · · · (noun) the curve of y=sin x. Synonyms: sinusoid. · · Noun Definition 1 Synonyms · · · sine · · Synonym 1 sin · · Synonym 2 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075 v latin small letter v U+0076