Home › Words › X › xystusxystus/ˈzɪstəs/xystus means A long and open portico within the gymnasium.xystus is pronounced /ˈzɪstəs/.EtymologyFrom Ancient Greek ξυστός (xustós, “smooth; scraped”), from ξύω (xúō, “scrape”), referring to its polished floor.nounA long and open portico within the gymnasium.Definitions & examples from Wiktionary (CC BY-SA 3.0).