Save Type Surname Usage Lao Scripts ແສງສະຫວັນ(Lao) Pronounced Pron. /sɛ̆ːŋ.sá.ˈwǎn/ [key·simplify] Meaning & History From Lao ແສງ (seng) meaning "light" and ສະຫວັນ (savanh) meaning "heaven".