Home › Words › G › gaillardiagaillardia/ɡeɪˈlɑː(ɹ)dɪə/gaillardia · noun — any of several New World flowering plants of the genus Gaillardia.Definition from Wiktionary (CC BY-SA 3.0).gaillardia is pronounced /ɡeɪˈlɑː(ɹ)dɪə/.EtymologyFrom the genus name. Named after Maître Gaillard de Charentonneau, an 18th-century French magistrate and an enthusiastic botanist.nounAny of several New World flowering plants of the genus GaillardiaDefinitions & examples from Wiktionary (CC BY-SA 3.0).