spectrograph noun. ['spɛktrǝgrɑ:f] L19.
[from SPECTRO- + -GRAPH.]
1. An instrument for photographing a spectrum; any apparatus for producing a visual record of a spectrum (optical or otherwise). L19.
mass spectrograph, sound spectrograph, etc.

2. = spectrogram. Now rare or obsolete. L19.

■ spectrogram noun a photograph of a spectrum; any visual representation of a spectrum: L19.

■ spec'trographer noun a person who uses a spectrograph M20.

■ spectro'graphic adjective of, pertaining to, or employing spectrography L19.

■ spectro'graphically adverb by means of a spectrograph E20.

■ spec'trography noun the technique of using a spectrograph E20.

[TahlilGaran] English Dictionary ▲