Brechungsindex

== German == === Etymology === From Brechung (“refraction”) +‎ -s- +‎ Index (“index”). === Pronunciation === === Noun === Brechungsindex m (strong, genitive Brechungsindexes or Brechungsindex, plural Brechungsindizes or Brechungsindices) (physics) refractive index Synonym: Brechzahl