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etalons
We have found lemma(root) word of etalons : etalon.
Definitions
[ˈɛtəlɒn], (Noun)
Definitions:
- a device consisting of two reflecting glass plates, employed for measuring small differences in the wavelength of light using the interference it produces
Phrases:
Origin
:
early 20th century: from French étalon, literally ‘standard of measurement’
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definition by Oxford Dictionaries