Where does “отвердение” come from?

отвердение (Russian) comes from Russian отверде́ть, from Russian тверде́ть, from Russian твёрдый, from Old East Slavic твьрдъ, from Proto-Slavic tvьrdъ, from Proto-Balto-Slavic *twírˀtas, from Proto-Indo-European twerH- — to enclose, fence in; to grab, seize; to stir.

отвердение (Russian): hardening; induration

Definitions

  1. hardening; induration

Ancestry of “отвердение”, step by step

StepLanguageWordMeaning
1Russianотверде́тьto harden, to become firm
2Russianтверде́тьto harden
3Russianтвёрдыйhard, solid; firm; steadfast, steady
4Old East Slavicтвьрдъ
5Proto-Slavictvьrdъhard, firm, solid
6Proto-Balto-Slavic*twírˀtashard, firm, solid
7Proto-Indo-EuropeantwerH-to enclose, fence in; to grab, seize; to stir
Every word from Proto-Indo-European twerH-Every word from Proto-Balto-Slavic *twírˀtasEvery word from Proto-Slavic tvьrdъ