Spectroscopic device with two flat parallel reflecting surfaces used to measure wavelengths Crossword Clue

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Here is the answer for the crossword clue Spectroscopic device with two flat parallel reflecting surfaces used to measure wavelengths last seen in Mirror Quiz puzzle. We have found 40 possible answers for this clue in our database. Among them, one solution stands out with a 98% match which has a length of 6 letters. We think the likely answer to this clue is ETALON.

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Crossword Answer For Spectroscopic device with two flat parallel reflecting surfaces used to measure wavelengths:

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40 Potential Answers:

RankAnswerLengthSourceDate
98% ETALON Spectroscopic device with two flat parallel reflecting surfaces used to measure wavelengths (6) Mirror Quiz Feb 16, 2025
3% LEVEL With a flat surface (5) Newsday Oct 29, 2025
3% AREA Surface measure (4) The Telegraph Cross Atlantic Oct 1, 2025
2% POOPDECK Flat surface at rear of ship (4,4) (8) The Guardian Quick Nov 6, 2025
2% PLANE Two-dimensional surface in math (5) USA Today Nov 6, 2025
2% MAT Wrestling surface (3) Commuter Nov 4, 2025
2% JOHNSON Surname of two US presidents (7) (7) The Sun Mini Nov 3, 2025
2% RAY Flat fish (3) Puzzler Backwords Oct 30, 2025
2% LIP One of two used for a kiss (3) Universal Oct 29, 2025
2% WAVE Surface for surfing (4) Newsday Oct 29, 2025

Last appeared together with the following clues in Mirror Quiz puzzle

Spectroscopic device with two flat parallel reflecting surfaces used to measure wavelengths Crossword Clue
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We found 40 solutions for Spectroscopic device with two flat parallel reflecting surfaces used to measure wavelengths. The top solutions are determined by popularity, ratings and frequency of searches. The most likely answer for the clue is ETALON.

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