sisDict.lkDict.lk - Sinhala to English DictionaryMeaning sis Tweet Sinhala Dictionary definitions for sissis 🔊 /sɪˈs/sis : සහෝදරියsis definitionNoun. A colloquial abbreviation of Sister.Six. See Sise.Lern More AboutWiki Definition: sisGoogle Search result: GoogleWiki Article: Wikipedia Tweet