Where does “цирко́ний” come from?
цирко́ний (Russian) comes from German zirkonium, from German Zirkon, from French zircon, from Arabic زَرْقُون, from Pahlavi zlgwn', from Proto-Iranian jr̥Hanyam, from Proto-Indo-Iranian ȷ́ʰr̥Hanyam, from Proto-Indo-European ǵʰl̥h₃enyom — to flourish; green, yellow.
Ancestry of “цирко́ний”, step by step
Words derived from “цирко́ний”