Where does “гидрокостюм” come from?
гидрокостюм (Russian) comes from Russian костю́м, from French costume, from Italian costume, from Latin cōnsuētūdō, from Latin cōnsuēscō, from Latin suēscō, from Proto-Indo-European swe-dʰh₁-sk-, from Proto-Indo-European dʰeh₁- — to do, put, place.
гидрокостюм (Russian): immersion suit
Ancestry of “гидрокостюм”, step by step