hljóðeind

== Icelandic == === Etymology === From hljóð (“sound”) +‎ eind (“particle”). === Pronunciation === IPA(key): /ˈl̥jouːð.eint/ === Noun === hljóðeind f (genitive singular hljóðeindar, nominative plural hljóðeindir) (particle physics) phonon ==== Declension ====