- 三次元 sāncìyuán three-dimensional; the real worldThree-dimensional; often used in ACG (anime, comic, games) contexts to refer to the real world in contrast to the fictional two-dimensional world ([[二次元|二次元|er4 ci4 yuan2]])
- 三次幂 sāncìmì cube(math) the third power of a number
- 三次方 sāncìfāng cubethe product of a number multiplied by itself two additional times (e.g., x * x * x), also known as the third power in mathematics
- 三次方程 sāncìfāngchéng cubic equationan equation where the highest power of the unknown variable is three; cubic equation
- 三次方程式 sāncìfāngchéngshì cubic equationan algebraic equation in which the highest power of the unknown variable is to the third degree
- 三次曲线 sāncìqūxiàn cubic curvea curve in geometry defined by a third-degree polynomial equation
- 开三次方 kāisāncìfāng to extract a cube rootto calculate the cube root of a number in mathematics