温暖前線 おんだんぜんせん Meanings Noun warm front See also: 寒冷前線 (かんれいぜんせん). Kanji 温 warm. Read as オン. 暖 warm. Read as ダン. 前 front. Read as ゼン. 線 line. Read as セン. Word lists Meteorology Jinuma: Japanese Dictionary · Word lists