にじれいきゃくすい 二次冷却水 LinksSentence search for 二次冷却水Sentence search for にじれいきゃくすいKanji details for 二, 次, 冷, 却 and 水Edit in JMdict Noun1. secondary cooling water (esp. in a pressurized water reactor) Discussions Log in to talk about this word.