不变量 bùbiànliàng invariant Origin Definitions Defs Strokes Stroke Words Sentences Sents 不变 不變 bùbiàn adjectiveverb unchanging constant; unvarying; fixed; in mathematics, this refers to an invariant量 liàng noun quantity; capacity The amount, volume, or quantity of something; capacity to hold or tolerate, such as for food, drink, or character.