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Rareetalon
The correct spelling is etalon.
How to pronounce etalon
noun
Say it like: Eta-lon
The correct spelling is etalon. An optical device containing parallel mirrors, used as a narrow band filter, often in laser design.
Usage Examples
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Definition
noun
- 1.An optical device containing parallel mirrors, used as a narrow band filter, often in laser design.
Similar words
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