[ spek-truh-graf, -grahf ]
/ ˈspɛk trəˌgræf, -ˌgrɑf /


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

Origin of spectrograph

First recorded in 1880–85; spectro- + -graph

OTHER WORDS FROM spectrograph

spec·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. 2020

Example sentences from the Web for spectrograph

British Dictionary definitions for spectrograph

/ (ˈspɛktrəʊˌɡrɑːf, -ˌɡræf) /


a spectroscope or spectrometer that produces a photographic record (spectrogram) of a spectrumSee also sound spectrograph

Derived forms of spectrograph

spectrographic, 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

Scientific definitions for spectrograph

[ spĕktrə-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.