正せい規き直ちょっ交こう基き底ていせいきちょっこうきていじ字FuriganaMeanings1nounorthonormal basismathematics›A set of mutually orthogonal unit vectors that span a vector space. Used in mathematics, especially linear algebra and functional analysis.正せい規き直ちょっ交こう基き底ていを用もちいると、ベクトル