Solid state

Solid state, or solid matter, is one of the four fundamental states of matter.

Solid state may also refer to:

Electronics

 * Solid-state electronics, circuits built of solid materials
 * Solid state ionics, study of ionic conductors and their uses
 * Solid-state drive, a computer drive

Music

 * Solid State Records, a Christian music label
 * Solid State Records (jazz label), active in the 1960s
 * Solid State, a music group featuring DJ Dextrous
 * Solid State (Leon Russell album), 1984
 * Solid State (Jonathan Coulton album), 2017
 * Solid State, an album by Sam Phillips

Science

 * Solid-state chemistry, the study of the synthesis, structure, and properties of solid phase materials
 * Solid-state physics, the study of rigid matter, or solids, through methods such as quantum mechanics, crystallography, electromagnetism, and metallurgy