Where does “взаимопроникновение” come from?

взаимопроникновение (Russian) comes from Russian взаимо-, from Russian -о-, from Old East Slavic -о-, from Proto-Slavic -o-.

взаимопроникновение (Russian): interpenetration, interaction of cultures, technology, [[mutual influence

Definitions

  1. interpenetration, interaction of cultures, technology, [[mutual influence

Ancestry of “взаимопроникновение”, step by step

StepLanguageWordMeaning
1Russianвзаимо-co-
2Russian-о-water; art; owner
3Old East Slavic-о-—
4Proto-Slavic-o-—
Every word from Proto-Slavic -o- →Every word from Russian -о- →Every word from Russian взаимо- →