Definition of solid–state
1 : relating to the properties, structure, or reactivity of solid material; especially : relating to the arrangement or behavior of ions, molecules, nucleons, electrons, and holes in the crystals of a substance (such as a semiconductor) or to the effect of crystal imperfections on the properties of a solid substance solid–state physics
2a : utilizing the electric, magnetic, or optical properties of solid materials solid–state circuitryb : using semiconductor devices rather than electron tubes a solid–state radio
First Known Use of solid–state
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