Borrowed fromArabicدِين(dīn,“religion, creed”), with some influence fromMiddle Persian[script needed](dyn'/dēn/), which developed fromOld Persian*dainah(“a religious-informed or conscientious way of life”).
Hindoglu, Artin (1838), “دین”, inHazine-i lûgat ou dictionnaire abrégé turc-français[1], Vienna: F. Beck,page240a
Kélékian, Diran (1911), “دین”, inDictionnaire turc-français[2] (in French), Constantinople: Mihran,page601
Meninski, Franciszek à Mesgnien (1687), “Religio”, inComplementum thesauri linguarum orientalium, seu onomasticum latino-turcico-arabico-persicum, simul idem index verborum lexici turcico-arabico-persici, quod latinâ, germanicâ, aliarumque linguarum adjectâ nomenclatione nuper in lucem editum[3], Vienna,column1456
Meninski, Franciszek à Mesgnien (1680), “دین”, inThesaurus linguarum orientalium, Turcicae, Arabicae, Persicae, praecipuas earum opes à Turcis peculiariter usurpatas continens, nimirum Lexicon Turkico-Arabico-Persicum[4], Vienna,column2217
Kélékian, Diran (1911), “دین”, inDictionnaire turc-français[7] (in French), Constantinople: Mihran,page601
Meninski, Franciszek à Mesgnien (1687), “Debitum”, inComplementum thesauri linguarum orientalium, seu onomasticum latino-turcico-arabico-persicum, simul idem index verborum lexici turcico-arabico-persici, quod latinâ, germanicâ, aliarumque linguarum adjectâ nomenclatione nuper in lucem editum[8], Vienna,column324
Meninski, Franciszek à Mesgnien (1680), “دین”, inThesaurus linguarum orientalium, Turcicae, Arabicae, Persicae, praecipuas earum opes à Turcis peculiariter usurpatas continens, nimirum Lexicon Turkico-Arabico-Persicum[9], Vienna,column2216