осмый

• осмыи, осьмыи, ѡсмый, осьмый
• восмый

Inherited from Old East Slavic осмꙑи (osmyi), осмъи (osmy), from Proto-Slavic *òsmъ, from Proto-Balto-Slavic *aśmas, ultimately from Proto-Indo-European *oḱtṓwos (“8th”), from *oḱtṓw (“8”).[1] Cognate with Russian восьмо́й (vosʹmój), Old Church Slavonic осмъ (osmŭ) and Old Czech osmý.

осмый • (transliteration needed)

1. eighth (8th)

• Belarusian: во́смы (vósmy)
• Rusyn: во́сьмый (vósʹmŷj)
• Ukrainian: во́сьмий (vósʹmyj); во́сьмой (vósʹmoj) (dialectal)

• Hrynchyshyn, D. H., editor (1978), “*осмыи”, in Словник староукраїнської мови XIV–XV ст. [Dictionary of the Old Ukrainian Language of the 14ᵗʰ – 15ᵗʰ cc.] (in Ukrainian), volume 2 (Н – Ѳ), Kyiv: Naukova Dumka, page 95
• Hrynchyshyn, D. H., editor (1978), “*осьмыи”, in Словник староукраїнської мови XIV–XV ст. [Dictionary of the Old Ukrainian Language of the 14ᵗʰ – 15ᵗʰ cc.] (in Ukrainian), volume 2 (Н – Ѳ), Kyiv: Naukova Dumka, page 100
• Hrynchyshyn, D. H., editor (1997), “восмый; осмый”, in Словник української мови XVI – I пол. XVII ст. [Dictionary of the Ukrainian Language: 16ᵗʰ – 1ˢᵗ half of 17ᵗʰ c.] (in Ukrainian), issue 4 (весь – вправѣ), Lviv: KIUS, →ISBN, page 243
• Zhurawski, A. I., editor (1984), “восмый”, in Гістарычны слоўнік беларускай мовы [Historical Dictionary of the Belarusian Language] (in Belarusian), issue 4 (вкупитися – вспевати), Minsk: Navuka i tekhnika, page 205
• Bulyka, A. M., editor (2002), “осмый, осьмый”, in Гістарычны слоўнік беларускай мовы [Historical Dictionary of the Belarusian Language] (in Belarusian), issue 22 (оддыханье – ость), Minsk: Belaruskaia navuka, →ISBN, page 399