不定方程 bùdìngfāngchéng indeterminate equation Origin Definitions Defs Strokes Stroke Words Sentences Sents 不定 bùdìng adjective indefinite not fixed or certain; indeterminate; wandering or shifting; without a fixed result or settlement方程 fāngchéng noun equation A mathematical statement in which two algebraic expressions are equal and contain one or more unknown values