DICTIONARY ENTRY
4 SYLLABLES
refractive index
/rɪ'fræktɪv_'ɪndɛks/ · rɪfræktɪvɪndɛks
Refractive index has 4 syllables: re · frac · tive in · dex.
re
01
frac
02
tive in
03
dex
04
noun. The ratio of the velocity of light in a vacuum to that in a medium.
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