| Symbol | Description | Unit |
| A | Laser beam area at the surface | m2 |
| a | Approximation constant [16] | - |
| Cp | Specific heat capacity | kJ/(kg K) |
| D | Thermal diffusivity | m2/s |
| Dinner | Inner removal diameter | µm |
| Douter | Outer removal diameter | µm |
| dspot | Laser spot diameter | µm |
| G | Green function | - |
| H | Heat transfer coefficient | W/(m2∙K) |
| I | Laser power density | W/cm2 |
| l | Absorption depth | nm |
| PL | Laser power | W |
| Pabs | Absorbed laser power | W |
| r | Laser beam radius | µm |
| T | Temperature rise | ˚C |
| TBoiling | Electrolyte boiling temperature | ˚C |
| Tmodel,peak | Peak surface temperature (Model) | ˚C |
| TR,max | Upper limit temperature for a material removal | ˚C |
| TR,min | Bottom limit temperature for a material removal | ˚C |
| t | Time | s |
| tL | Irradiation time | s |
| v | Feed velocity | m/s |
| X Y Z | Dimensionless coordinates | - |
| x y z | Dimensional coordinates | m |
| α | Dimensionless quantity (r/l) | - |
| αabs | Wavelength related absorption coefficient of Ti | % |
| θ | Dimensionless quantity (H・r/κ) | - |
| κ | Thermal conductivity | W/(m K) |
| λ | Laser wavelength | nm |
| ϕ | Integration variable/substitution quantity (τ - τ’) | - |
| ρ | Density | Kg/m³ |
| τ | Dimensionless time coordinate | - |
| τE | Transmission coefficient of the electrolyte | % |
| Ψ | Dimensionless temperature rise | - |