Save Type Political Subdivision & Settlement Usage Thai Scripts ระยอง(Thai) Pronounced Pron. /ra˦˥.ˈjɔːŋ˧/ [key·simplify] Meaning & History From Chong ราย็อง (rayong) either meaning "boundary, territory, frontier" or referring to the Burma padauk (a type of tree). This is the name of a province and city in Thailand.