(geometry) Any of a class of convex semiregular polyhedra, composed of two or more types of regular polygon meeting in identical vertices.

(physics) Having or relating to the physical properties of solid materials, especially electromagnetic, thermodynamic or structural properties of crystalline solids.

(quantum mechanics) Any of a class of solids (such as that of helium) whose atoms or molecules undergo large zero-point motion even in the quantum ground state (at absolute zero).

(chemistry) A type of colloid, of the form of a solid dispersed in a liquid.

plural of Steinmetz solid

(geometry) The solid body generated by the intersection of two or three cylinders of equal radius at right angles.

Drawn out from a heated solid bar, as by a process of spiral rolling which first hollows the bar and then expands the cavity by forcing the bar over a pointed mandrel fixed in front of the rolls; said of a weldless tube.

A chemical compound that is solid. / (grammar) A compound word with no spaces or hyphens in it, such as dishcloth, keyboard, or pancake.

plural of solid compound

Solidly and thoroughly booked; fully scheduled with no free breaks or space; unavailable.