天てん体たい分ぶん光こう術じゅつMeaningsNoun1. astronomical spectroscopyKanji used天heaven体body分part光ray術techniqueComposed of天てん体たいheavenly body; celestial body; astronomical objectNoun分ぶん光こうseparation of light into its spectral components; dispersionNoun術じゅつart; technique; skill; means; way; stratagem; artifice; trick; trap; magic; …Noun