Definition of "spectrograph" []

• A spectroscope equipped to photograph or otherwise record spectra. (noun)
• A spectrogram. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The tip-off was its spectrum, the rainbow of colors that appears when starlight is smeared out in an instrument called a spectrograph."
• "A spectrum is created when an instrument called a spectrograph spreads light from an object apart into a rainbow of different wavelengths."
• "NASA calls the spectrograph is its primary black-hole hunter."