Where does “вентиляционный” come from?
вентиляционный (Russian) comes from Russian вентиля́ция, from Latin ventilātiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis-, from Latin calceus — small stone, pebble; gravel, rubble.
вентиляционный (Russian): ventilation, vent
Ancestry of “вентиляционный”, step by step