From Wiktionary, the free dictionary
From Proto-Indo-European *h₂weh₁-yú-s, from *h₂weh₁- (“to blow”).
*HwaHyúš m
- wind, air
- *Hantár-HwaHyúš (“inter-air; atmosphere”)
- Proto-Iranian: *HantárHwaHyúš
- Parthian: 𐫀𐫗𐫅𐫡𐫇𐫀𐫉 (ʾndrwʾz /andarwāz/), 𐫀𐫗𐫅𐫡𐫇𐫀𐫀𐫉 (ʾndrwʾʾz)
- → Manichaean Middle Persian: 𐫀𐫗𐫅𐫡𐫇𐫀𐫉 (ʾndrwʾz /andarwāz/)
- Middle Persian: [Term?] (/andarwāy/)
- Book Pahlavi script: [Book Pahlavi needed] (ʾndlwʾd)
- Classical Persian: اندروای (andarwāy, “upside down; in the air”)
- Iranian Persian: اندروا (andarvā), دروا (darvâ, “hanging”)
- Proto-Indo-Aryan: *HwaHyúṣ
- Proto-Iranian: *HwaHyúš
- Avestan: 𐬬𐬀𐬌𐬌𐬎 (vaiiu)
- Parthian: 𐫇𐫏𐫇 (wyw /wēw/, “air, atmosphere”)
- Old Persian: *𐎺𐎹 (*v-y /vaya/)
- Middle Persian: (/way/, “air; atmosphere”)
- Book Pahlavi script: [Book Pahlavi needed] (wʾd)
- → Persian: وای (vây, “air”) (right borrowing)