a. [f. prec. or ad. F. spectroscopique.]
1. Performed by means of the spectroscope.
1864. Athenæum, No. 1929. 500/2. The spectroscopic examinations.
1870. Proctor, Other Worlds, ii. 38. So many of the wonders of modern science are associated with spectroscopic analysis.
1878. Newcomb, Pop. Astron., III. ii. 257. Devoting special attention to the spectroscopic observations.
1883. Science, I. 115/1. The results of spectroscopic work.
2. Presented or afforded by, pertaining or belonging to, the spectroscope.
1869. Eng. Mech., 31 Dec., 375/1. Data … with respect to the spectroscopic appearances of comets.
1879. Proctor, Pleas. Ways Sci., i. 7. In some cases, the quantity of a material to give unmistakable spectroscopic evidence is singularly small.
1884. Knight, Dict. Mech., Suppl. 835/2. Spectroscopic Eyepiece,… an adaptation of the spectroscope to the microscope for the examination of minute substances.
3. Occupied or dealing with spectroscopy.
1871. trans. Schellen’s Spectrum Anal., Pref. 4. I regret that the author has reversed the practice of the principal spectroscopic authors.
1871. Daily News, 12 Jan., 5/2. It is true the spectroscopic party headed by Dr. Huggins at Oran failed totally.
So Spectroscopical a.
1870. Eng. Mech., 11 Feb., 520/2. The nature of the solar atmosphere is ascertained by spectroscopical examinations of the light of the sun.
1882. Athenæum, 4 March, 286/2. An interesting series of spectroscopical observations.
