Where does “молниеносно” come from?

молниеносно (Russian) comes from Russian молниено́сный, from Russian мо́лния, from Old East Slavic мълниꙗ, from Proto-Slavic mъlnьji, from Proto-Slavic mъldnьji.

молниеносно (Russian): with lightning speed

Definitions

  1. with lightning speed

Ancestry of “молниеносно”, step by step

StepLanguageWordMeaning
1Russianмолниено́сныйlightning fast
2Russianмо́лнияlightning
3Old East Slavicмълниꙗ—
4Proto-Slavicmъlnьji—
5Proto-Slavicmъldnьji—
Every word from Proto-Slavic mъldnьji →Every word from Proto-Slavic mъlnьji →Every word from Old East Slavic мълниꙗ →