Top matchにじょう二乗nijouNoun, Suru verb, Transitive verbsquare (of a number); multiplying (a number) by itself; second powerMathematics五の二乗は25である。The square of 5 is 25.Also written 2乗【にじょう】nijou、自乗【じじょう】jijou Listen Conjugations Pitch on OJAD Explore