にじ 二次 Common word LinksSentence search for 二次Sentence search for にじKanji details for 二 and 次Edit in JMdict Noun which may take the genitive case particle 'no', Noun1. secondNoun or verb acting prenominally2. secondaryNoun or verb acting prenominally3. quadratic (function, equation, etc.); second-orderMathematics Discussions Log in to talk about this word.