交項級数 こうこうきゅうすう Meanings Noun alternating series See also: 交代級数 (こうたいきゅうすう). Kanji 交 exchange. Read as コウ. 項 item. Read as コウ. 級 grade. Read as キュウ. 数 number. Read as スウ. Word lists Mathematics Jinuma: Japanese Dictionary · Word lists