What is the term for the change of a substance from a gas directly to a solid without passing through the liquid state?

The transition of a substance directly from a solid state to a gas state, skipping the liquid state entirely is called what?

he Process By Which Solid Change Directly To Gaseous State Without Undergoing The Liquid State Is

When a solid changes directly into a gas without melting, what is this process called?

What's the name for the temperature at which a substance changes state from a liquid to a gas?

The change of state from a gas to a liquid