Home › Words › O › otoprotectantotoprotectantotoprotectant · noun — any material that protects the ear from damage.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, otoprotectant ranks #32,191 of 43,295 for Qualifying.EtymologyFrom oto- + protectant.nounAny material that protects the ear from damageDefinitions & examples from Wiktionary (CC BY-SA 3.0).