The @R05379@, on cooling, of a liquid to a mixture of a second liquid and a solid: \[\text{liquid}_{1}\rightleftarrows \text{liquid}_{2}+\text{solid}\]
Source: PAC, 1994, 66, 577. (Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)) on page 586 [Terms] [Paper]