[L. solidus SOLID a.] A curve showing the temperatures at which a series of alloys are completely solid.
1903. Proc. Royal Soc., 16 June, 284. As indicated by the liquidus and solidus curves approximating closely to one another.
1904. W. C. Dampier-Whetham, Rec. Develop. Phys. Sci., iii. 94. Below the curve adb, or solidus, the alloy is entirely solid. Ibid., 97. Equilibrium curves lying below the solidus.