solid-state

adjective3

1. •
   Having or relating to the physical properties of solid materials, especially electromagnetic, thermodynamic or structural properties of crystalline solids.
2. •
   Of an electronic component, based upon semiconductors, as distinct from older technologies such as vacuum tubes.
3. •
   Of a battery, using all solid construction; not using a wet membrane, gel, paste, liquid, gas or air, as the electrolyte or electrodes.