Dictionary
spec•tro•scope
Pronunciation: (spek'tru-skōp"), [key]—
n. Optics.
an optical device for producing and observing a spectrum of light or radiation from any source, consisting essentially of a slit through which the radiation passes, a collimating lens, and an Amici prism.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.