Home › Words › X › xenomaxenomaxenoma · noun — A growth caused by various protists and fungi, most notably microsporidia.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, xenoma ranks #7,433 of 43,252 for Qualifying.EtymologyFrom xeno- + -oma.nounA growth caused by various protists and fungi, most notably microsporidia.Definitions & examples from Wiktionary (CC BY-SA 3.0).