０歳れいさいMeaningsNoun1. under 1 year old (of a baby); 0 years oldOther spellings０才れいさい〇歳れいさいUsage share unknownOther readings０歳ぜろさい０才ぜろさい〇歳ぜろさいKanji used歳years oldKanji in other spellings才talentPitch accentれいさい