Where does “пенополистирол” come from?

пенополистирол (Russian) comes from Russian пе́на, from Proto-Slavic pěna, from Proto-Balto-Slavic *(s)páināˀ, from Proto-Indo-European (s)poH(y)-, from Proto-Indo-European speh₁- — to succeed, to prosper.

Ancestry of “пенополистирол”, step by step

пенополистирол traces back through two separate lines of ancestry.

via Russian пе́на

StepLanguageWordMeaning
1Russianпе́наfoam
2Proto-Slavicpěnafoam
3Proto-Balto-Slavic*(s)páināˀ
4Proto-Indo-European(s)poH(y)-foam
5Proto-Indo-Europeanspeh₁-to succeed, to prosper

via Russian полистиро́л

StepLanguageWordMeaning
1Russianполистиро́лpolystyrene
2Russianполи-
Every word from Proto-Indo-European speh₁-Every word from Proto-Indo-European (s)poH(y)-Every word from Proto-Balto-Slavic *(s)páināˀ