spec·tro·scop·ic \|spektrə|skäpik, -pēk\adjective alsospec·tro·scop·i·cal\-pə̇kəl, -pēk-\ Etymology:spectroscope + -ic, -ical 1.: of, relating to, or involving spectroscopy or the spectroscope or sometimes spectrograph 2.: dealing or concerned with spectroscopy • spec·tro·scop·i·cal·ly\-pə̇k(ə)lē, -pēk-, -li\adverb