An Etymological Dictionary of the German Language/Annotated/lang

by Friedrich Kluge

lang, adjective, ‘long,’ from the equivalent Middle High German lanc (g), Old High German (and Old Saxon) lang; it corresponds to Anglo-Saxon and English long, Gothic laggs, Old Icelandic langr, Dutch and Low German lang. A common Teutonic adjective primitively allied to Latin longus; it also cognates, perhaps, with Old Persian drânga, so that in Latin and Teutonic a dental (d or dh) may have been lost; Greek δολιχός, Old Slovenian dlŭgŭ, Sanscrit dîrghás, ‘long,’ are certainly not allied. —