星群 せいぐん Meanings Noun asterism (i.e.: pattern of stars which do not form a constellation) See also: アステリズム. Kanji 星 star. Read as セイ. 群 flock. Read as グン. Words containing 星群 流星群 (りゅうせいぐん) meteor swarm ペルセウス座流星群 (ペルセウスざりゅうせいぐん) Perseids ふたご座流星群 (ふたござりゅうせいぐん) Geminids And 1 more. Word lists Astronomy Jinuma: Japanese Dictionary · Word lists