Etymology

From Proto-Iranian [Term?] (compare Avestan 𐬛𐬀𐬭𐬆𐬔𐬀 ‎(darǝga-, “long”)), from Proto-Indo-Iranian *drHgʰa- (compare Sanskrit दीर्घ ‎(dīrghá)), from Proto-Indo-European *dl̥h₁gʰó-, from *dl̥h₁gʰós ‎(“long”) (compare Latin longus, Old Church Slavonic дльгъ ‎(dlĭgŭ)).