seismograph seismogram • seismographer · · · Info · Definitions · Characters · · seismograph · · Text Latin · · Script 11 · · Length 4 · · Syllables Definitions · · · (noun) a measuring instrument for detecting and measuring the intensity and direction and duration of movements of the ground (as an earthquake). · · Noun Definition 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D 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