Word零れいreiMeaningzeroPart of speechnoun, numeralPronunciationCourseJapaneseLessonVocabulary expansion 45Breakdown of reizero零The amount of rain you order for today is zero.Usages of rei今きょ日う は 零れい度ど です。kyou ha reido desu.Today it is zero degrees.答こたえ は 零れい です。kotae ha rei desu.The answer is zero.