Where does “огнестойкий” come from?

огнестойкий (Russian) comes from Russian сто́йкий, from Russian сто́йка, from Russian стоя́ть, from Old East Slavic стоꙗти, from Proto-Slavic stojati, from Proto-Slavic stojěti, from Proto-Slavic -ěti, from Proto-Balto-Slavic -ēˀtei — Creates stative verbs from perfective roots;...

огнестойкий (Russian): fire-retardant

Definitions

  1. fire-retardant

Ancestry of “огнестойкий”, step by step

огнестойкий traces back through two separate lines of ancestry.

via Russian сто́йкий

StepLanguageWordMeaning
1Russianсто́йкийrobust, sturdy, hardy, durable
2Russianсто́йкаstand (a device to hold something upright or aloft)
3Russianстоя́тьto stand
4Old East Slavicстоꙗтиto stand
5Proto-Slavicstojatito stand
6Proto-Slavicstojěti
7Proto-Slavic-ětiInherited, stative; Deadjectival, inchoative;...
8Proto-Balto-Slavic-ēˀtei
9Proto-Indo-European-éh₁tiCreates stative verbs from perfective roots;...

via Russian огонь

StepLanguageWordMeaning
1Russianогоньfire; light; weapons fire
2Old East Slavicогньfire
3Proto-Slavicogňьfire
4Proto-Balto-Slavicungnisfire
5Proto-Indo-Europeanh₁n̥gʷnisfire
6Proto-Indo-Europeanh₁engʷ-to burn; fire
Every word from Proto-Indo-European -éh₁tiEvery word from Proto-Slavic -ětiEvery word from Proto-Slavic stojěti