Bible Dictionaries
Spectrograph
Webster's Dictionary
(1):
(n.) A photograph or picture of a spectrum.
(2):
(n.) An apparatus for photographing or mapping a spectrum.
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Bibliography Information
Webster, Noah. Entry for 'Spectrograph'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/s/spectrograph.html. 1828.