liquidus

noun
liq·ui·dus | \ˈlikwə̇dəs\
variants: or less commonly liquidus curve
plural -es

Definition of liquidus 

: a curve usually on a temperature-composition diagram for a binary system that over a range of temperatures between the melting points of the pure components relates compositions of the liquid phase to the solid phase in equilibrium with the liquid phase and that indicates temperatures above which only the liquid phase can exist — compare solidus, solvus

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History and Etymology for liquidus

Latin liquidus liquid

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