trigonometric function trigonometrical • trigonometrician · · · Info · Definitions · Synonyms · Characters · · trigonometric function · · Text Common · · Latin · · Scripts 22 · · Length 7 · · Syllables Definitions · · · (noun) function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle. Synonyms: trigonometric function, circular function. · · Noun Definition 1 Synonyms · · · circular function · · Synonym 1 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 f latin small letter f U+0066 g latin small letter g U+0067 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075