безмѣнъ

Unknown, attested from the late 14th century, which is after the Mongol invasion, so probably folk-etymologically altered after без- (bez-) +‎ мѣна (měna) and a Turkic rendering of Arabic وَزْنَة (wazna), as most Slavic languages also have Arabic قِنْطَار (qinṭār) via Turkic to denote the steelyard, both originally units of weight.

• (ca. 9^th CE) IPA^(key): /bɛˈzmeːnʊ/
• (ca. 11^th CE) IPA^(key): /bʲɛˈzmʲeːnʊ/
• (ca. 13^th CE) IPA^(key): /bʲɛˈzmʲɛːn/, /bʲɛˈzmʲeːn/

безмѣнъ (bezměnŭ) m

1. stilyard

• Russian: безме́н (bezmén)
  • → Georgian: ბაზმანდი (bazmandi)
  • → Armenian: բեզմեն (bezmen)
• Ukrainian: бе́змін (bézmin), бе́змен (bézmen), бедзвін (bedzvin), бедзмін (bedzmin), безмір (bezmir), безьман (bezʹman), безьмін (bezʹmin), безьмин (bezʹmyn)
• → Middle Low German: besemer, bisemer, bismer, bysmer, besmere
  • Low German: Besmer, Bismer, Besemer
  • → Middle High German: besemer, bisemer (rare)
  • → German: Besemer, Besmer
  • → Old Norse: bismari
    • Danish: bismer
      • → Greenlandic: bismeri
    • Faroese: bismari
    • Swedish: besman, betsman, dialectally besmar, besmal, bismål, bismere, besmir, bysmär, bissmid etc. (probably reborrowed on multiple occasions)
• → Latvian: bezmēns, vezmēns
• → Lithuanian: bezmė̃nas
• →? Polish: bezmian, przezmian, przemian, przeźmion
  • → Czech: přezmen

• Bismere in Johan Ernst Rietz, Svenskt dialektlexikon (1862–1867)
• Vasmer, Max (1964–1973) “безме́н”, in Oleg Trubachyov, transl., Этимологический словарь русского языка [Etymological Dictionary of the Russian Language] (in Russian), Moscow: Progress

безмѣ́нъ • (bezmě́n) m inan (genitive безмѣ́на, nominative plural безмѣ́ны, genitive plural безмѣ́новъ)

1. Pre-1918 spelling of безме́н (bezmén, “stilyard”).