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English dictionary
Info: This web site is based on WordNet 3.0 from Princeton University.
English
noun
:
refractive index
1.
refractive index
the ratio of the velocity of light in a vacuum to that in a medium
Synonyms
index of refraction
Broader (hypernym)
ratio
Based on WordNet 3.0 copyright © Princeton University.
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. English edition:
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