spectrallyadv.
/ˈspɛktrəli/, /ˈspɛktrl̩i/, U.S. /ˈspɛktrəli/ 1. In a ghostly manner.
ΘΚΠ
the world > the supernatural > supernatural being > ghost or phantom > [adverb]
phantomishlya1450
ghostishlyc1565
spectrically1615
spirit-like1638
ghost-like1647
ghostly1781
ghostlily1824
ghostilyc1825
spectrally1837
phantomically1882
1837 T. Carlyle French Revol. II. ii. vi. 138 This..did for many months..walk spectrally—in all French heads.
1865 C. Dickens Our Mutual Friend II. iii. ii. 17 The steamer's lights moved spectrally a very little.
2. In the form of a spectrum; as regards, or in terms of, the spectrum.
ΘΚΠ
the world > matter > physics > atomic physics > decomposition of light, spectrum > [adverb]
spectrally1914
1914 S. E. Sheppard Photo-chem. viii. 325 Spectrally dispersed rays.
1971 Jrnl. Gen. Psychol. 84 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 Sci. Amer. Oct. 123/1 The light..is spectrally pure and monochromatic.
This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022).
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adv.1837