|spektrə|skäpik, -pēk adjective
also spec·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