The symbol / denoting division. Also call ‘slash’ or ‘forward slash’.
Chemistry
A line on a phase diagram below which a substance is solid.
Chemical Engineering
A boundary line or curve on a phase diagram between solid and liquid/solid at equilibrium. Below the line, the substance is solid.
Geology and Earth Sciences
The position of points marking the boundary between complete solid and liquid/solid at equilibrium, in a temperature–composition diagram. In binary systems the solidus is a straight or curved line, in ternary systems a flat plane or curved surface.