Water vapor is indeed the gaseous state of liquid water, occurring when water transitions from a liquid to a gas. This process is known as evaporation or boiling, depending on the conditions. The discussion highlights the fundamental nature of water vapor as a phase of water, emphasizing its role in the water cycle. Participants agree that understanding this transition is essential for grasping broader concepts in science. The conversation reinforces the importance of reliable sources like Wikipedia for clarifying scientific definitions.