Gaseous

/ˈɡeɪ.ʃəs/

Meaning & Definition

adjective
Having the form or characteristics of a gas.
The gaseous state of matter is less dense than the liquid or solid states.
Relating to or having the properties of gas.
The experiment involved the gaseous diffusion of particles in a vacuum.
Existing in a gaseous state under normal conditions.
Oxygen and nitrogen are both gaseous at room temperature.
Pertaining to substances that are in a gas-like state.
The gaseous emissions from the factory raised environmental concerns.

Etymology

From Latin 'gasium' (a substance) and 'gaseus' (gaseous).

Common Phrases and Expressions

gaseous state
A state of matter where substances are in gas form.
gaseous emissions
Gases released into the atmosphere, often from industrial processes.
gaseous diffusion
The process of gas molecules spreading out to fill a space.

Related Words

gas
A state of matter that has no fixed shape and can expand to fill any container.
vapour
A substance in the gaseous state, especially one that is normally a liquid or solid.
atmosphere
The envelope of gases surrounding the earth or another planet.

Slang Meanings

Used humorously to describe someone who is talking nonsense or being unclear.
He's just being gaseous again with all that talk about aliens.