Q: What is the term for the process in which water changes from a gas (water vapor) directly to a solid (ice) without changing to a liquid?

Arab Weather - The term that describes the process in which water changes from the gaseous state (water vapor) directly to the solid state (ice) without passing through the liquid state is deposition or reverse sublimation (Deposition).

Deposition occurs when a substance changes directly from a gaseous state to a solid state as a result of a decrease in temperature or pressure. This process is the opposite of sublimation, which is the change of a substance directly from a solid to a gas.