Home › Words › S › siluminsiluminsilumin means an alloy based upon silicon and aluminium.Among words judged in Lexicurio's Arena, silumin ranks #16,022 of 42,762 for Qualifying.EtymologyFrom the names of the two metals.nounAn alloy based upon silicon and aluminium.Definitions & examples from Wiktionary (CC BY-SA 3.0).