ˈsisərˌskīt, sə̇ˈsər- noun
( -s )
Etymology: German sisserskit, from Syssertsk, Sverdlovsk region, Union of Soviet Socialist Republics + German -it -ite
: a mineral consisting of a natural alloy of osmium and iridium with the latter ranging from 20 to 50 percent — compare iridosmine