きたい気体kitai
1.
A state of matter characterized by the absence of a fixed shape and volume, allowing it to freely expand and occupy the entirety of its container, transforming easily under changes in temperature and pressure.
2.
A form of substance that is less dense than liquids and solids, possessing the ability to flow and fill available space, often observed in natural elements like air.
3.
One of the three primary states of matter, distinguished by its fluidity and tendency to disperse, commonly found in forms such as gases and vapors that can change their volume with external pressure.
Example:
その気体は悪臭を放つ。