spectrally, adv.
(ˈspɛktrəlɪ)
[f. spectral a.]
1. In a ghostly manner.
| 1837 Carlyle Fr. Rev. ii. ii. vi, This..did for many months..walk spectrally,—in all French heads. 1865 Dickens Mut. Fr. iii. ii, The steamer's lights moved spectrally a very little. |
2. In the form of a spectrum; as regards, or in terms of, the spectrum.
| 1914 S. E. Sheppard Photo-Chem. viii. 325 Spectrally dispersed rays. 1971 Jrnl. Gen. Psychol. LXXXIV. 95 Spectrally pure stimuli are being produced by passing the output of a xenon arc through narrow-band interference filters. 1973 Sci. Amer. Nov. 77/1 The results of this experiment suggest that noise spectrally adjacent to the signal is most effective in masking recognition. 1980 Ibid. Oct. 123/1 The light..is spectrally pure and monochromatic. |