liquidus

https://doi.org/10.1351/goldbook.L03590
A line on a binary phase diagram (or surface on a ternary phase diagram) that indicates the temperature at which @S05733@ begins on cooling or at which @M03821@ is completed on heating under equilibrium conditions.
Source:
PAC, 1994, 66, 577. (Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)) on page 585 [Terms] [Paper]
Cite as: IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.
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Last revised: February 24, 2014