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DutchEdit

 
Dutch Wikipedia has an article on:
Wikipedia nl

EtymologyEdit

From breking +‎ -s- +‎ index.

PronunciationEdit

  • (file)
  • Hyphenation: bre‧kings‧in‧dex

NounEdit

brekingsindex m (plural brekingsindices or brekingsindexen)

  1. (optics) refractive index