solid state

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective physics of, or relating to the physical properties of solid materials, especially electromagnetic, thermodynamic or structural properties of crystalline solids.
• adjective electronics of, or relating to semiconductor materials, components and related devices; as distinct from older technologies such as vacuum tubes.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the state in which a substance has no tendency to flow under moderate stress; resists forces (such as compression) that tend to deform it; and retains a definite size and shape