二に次じ曲きょく線せんMeaningsNoun1. quadratic curveKanji used二two次next曲curved線linePitch accentにじきょくせんComposed of二に次じsecond; secondary; quadratic (function, equation, etc.); second-order; fictional (in relation to anime, manga, etc.); drawn; two-dimensionalNo-adjective曲きょく線せんcurveNoun