Save Type Surname Usage Japanese Scripts 五十嵐(Japanese Kanji) いがらし(Japanese Hiragana) Pronounced Pron. /i.ɡä.ɾä.ɕi/ [key·simplify] Meaning & History From Japanese 五十 (i) meaning "fifty", an unwritten subject marker が (ga), and 嵐 (arashi) meaning "storm". Related Names Rootsi + arashi Categories numeric meanings, weather