Save Gender Feminine Usage Thai Scripts วันวิสา(Thai) Pronounced Pron. wan-wee-SA [key·IPA] Other Forms FormsWanvisa, Vanvisa, Vanwisa Meaning & History Derived from Thai วันวิสาขบูชา (wanwisakhabucha) referring to Visakha Puja (or Vesak), a Buddhist holiday that celebrates the birth, enlightenment and death of Buddha.