| Subject | English | Portuguese |
| comp., MS, Braz. | z-axis | eixo z (The third axis in a three-dimensional coordinate system, used in computer graphics to represent depth) |
| comp., MS | z-axis | eixo Z (The third axis in a three-dimensional coordinate system, used in computer graphics to represent depth) |
| earth.sc., environ. | z-axis vibration | guinada |
| earth.sc., environ. | z-axis vibration | vibração eixo z |