| BP | normal boiling point –temperature where liquid/vapor phases are in equilibrium at 101.325 kPa |
| CP | normal condensation point – vapor temperature where vapor/liquid phases are in equilibrium at 101.325 kPa |
| EMF | electromotive force |
| eut | eutectic point (point-of-inflection) |
| eut(th) | eutectic point (thermodynamic temperature) |
| FP | normal freezing point – temperature where solid and liquid phases are in equilibrium at 101.325 kPa |
| IP | ice point – temperature where ice and liquid water are in equilibrium with air at 101.325 kPa |
| MP | normal melting point – temperature where solid and liquid phases are in equilibrium at 101.325 kPa |
| na | not available |
| peri | peritectic point (point-of-inflection) |
| peri(th) | peritectic point (thermodynamic temperature) |
| SC | superconductivity point – transition temperature between superconducting and normal states in zero magnetic field |
| SF | superfluid (λ) point – transition from a fluid phase to a superfluid phase for the liquid at its vapor-liquid saturation pressure |
| SP | normal sublimation point – temperature where solid and gas phases are in equilibrium at 101.325 kPa |
| TP | triple point – temperature where solid, liquid and vapor phases are in equilibrium |
| u | uncertainty at one standard deviation |
| U | expanded uncertainty at two standard deviations (95 %) confidence level |
| α-β | (α-β) phase transition |
| β-γ | (β-γ) phase transition |
