Solid state may refer to:

In science:

• Solid-state chemistry
• Solid-state physics
• Solid-state laser
• Solid matter

In electronics:

• Solid state (electronics) are circuits that do not contain relays, vacuum tubes or, more currently, moving parts.
• Solid state relay is an electronic switch that contains no moving parts.
• Solid-state drive, data storage device components that uses memory chips, such as SDRAMs, to store data

In music:

• Solid State Records, a Christian Metal/Metalcore label
• Solid State Records (jazz label), a jazz label
• "Solid State," a song by Combustible Edison from their 1996 album Schizophonic!

In other media:

• Ghost in the Shell: S.A.C. Solid State Society, a sequel to the acclaimed Ghost in the Shell: S.A.C. 2nd GIG.

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