Where does “вентили́рати” come from?
вентили́рати (Serbo-Croatian) comes from Latin ventilāre, from Latin ventus, from Proto-Italic wentos, from Proto-Indo-European h₂wéh₁n̥ts, from Proto-Indo-European h₂wḗh₁ti, from Proto-Indo-European h₂weh₁- — to blow.
Ancestry of “вентили́рати”, step by step
Words derived from “вентили́рати”