ALL meanings of z-axis
z-ax·is
Z z - noun plural z-axis (in a three-dimensional Cartesian coordinate system) the axis along which values of z are measured and at which both x and y equal zero. 1
- noun z-axis (algebraic geometry): The axis on a graph that is usually drawn as if vertical and usually shows the range of values of a variable dependent on two other variables or the third independent variable. 0