Solid state refers to electrical / electronic devices without moving parts.
The solid state component that can be used as a switch to turn current on or off is a thyristor.
The change in state from a solid to a liquid is called melting.
Solid-state devices
it is called solidification ------------------------------ Solid -> liquid : melting
This phasechange is called as melting.
Triac.
The physical change of a solid to a liquid is called melting
Transistor, Microprocessor, LCD etc.. are the solid state component or device. The device which is made by all these and other same solid state component is called solid state device.
It is called melting.
This is called freezing.
Melting
It is called melting when a solid turns into a liquid