Dictionary.com
definitions

spectrograph

[spek-truh-graf, -grahf]
|

noun

a spectroscope for photographing or producing a representation of a spectrum.
sound spectrograph.

Origin of spectrograph

First recorded in 1880–85; spectro- + -graph
Related formsspec·trog·ra·pher [spek-trog-ruh-fer] /spɛkˈtrɒg rə fər/, nounspec·tro·graph·ic [spek-truh-graf-ik] /ˌspɛk trəˈgræf ɪk/, adjectivespec·tro·graph·i·cal·ly, adverbspec·trog·ra·phy, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for spectrography

Historical Examples of spectrography

British Dictionary definitions for spectrography

spectrograph

noun

a spectroscope or spectrometer that produces a photographic record (spectrogram) of a spectrumSee also sound spectrograph
Derived Formsspectrographic, adjectivespectrographically, adverbspectrography, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for spectrography

spectrograph

n.

1884, from spectro- + -graph "instrument for recording; something written." Related: Spectrographic.

Online Etymology Dictionary, © 2010 Douglas Harper
spectrography in Science

spectrography

[spĕk-trŏg′rə-fē]

See spectroscopy.

spectrograph

[spĕk′trə-grăf′]

A photograph or computer image of a spectrum produced by a spectroscope. Also called spectrogram See spectroscope.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.