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brightline spectrum

American  

noun

Physical Chemistry.

  1. the spectrum of an incandescent substance appearing on a spectrogram as one or more bright lines against a dark background.

Etymology

Origin of brightline spectrum

First recorded in 1885–90

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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