Where does “авестийский” come from?

авестийский (Russian) comes from Russian Аве́ста — Avesta the sacred texts of Zoroastrianism, composed in the Avestan language.

авестийский (Russian): Avestan

Definitions

  1. Avestan

Ancestry of “авестийский”, step by step

StepLanguageWordMeaning
1RussianАве́стаAvesta the sacred texts of Zoroastrianism, composed in the Avestan language
Every word from Russian Аве́ста