高二 こうに Also written 高2 Meanings Noun second year of high school; second-year high-school student (abbr. of 高校2年(生)) Kanji 高 high. Read as コウ. 二 two. Read as ニ. Words containing 高二 高二酸化炭素血症 (こうにさんかたんそけっしょう) hypercapnia Jinuma: Japanese Dictionary · Word lists