WordReference Random House Learner's Dictionary of American English © 2026
spec•tro•scope /ˈspɛktrəˌskoʊp/USA pronunciation
n. [countable]
spec•tros•co•py /spɛkˈtrɑskəpi/USA pronunciation n. [uncountable]See -spec-, -scope-.
WordReference Random House Unabridged Dictionary of American English © 2026- Opticsa device to observe a spectrum of light or radiation.
spec•tros•co•py /spɛkˈtrɑskəpi/USA pronunciation n. [uncountable]See -spec-, -scope-.
spec•tro•scope
(spek′trə skōp′),USA pronunciation n. [Optics.]
spec•tro•scop•ic
(spek′trə skop′ik),USA pronunciation spec′tro•scop′i•cal, adj.
spec′tro•scop′i•cal•ly, adv.
- Opticsan 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.
- 1860–65; spectro- + -scope
'spectroscopically' also found in these entries (note: many are not synonyms or translations):