← All surnamesGasilionisGASILIÓNISEtymologyProbably from *Gasiulionis, see Gasoline. Feminine FORMSGasilionienė / GasilionytėPronunciation/ɡɐsʲɪ¹ˈlʲo̟ːnʲɪs/SEE ALSOGasiulis