Gas

/ɡæs/

Meaning & Definition

noun

A substance in the gaseous state, particularly one that is used as fuel.

The gas used in the heater is natural gas.

A fluid in the state of a gas, which can expand to fill any container.

The balloon was filled with helium gas.

A state of matter that is neither solid nor liquid, characterized by low density and the ability to fill a container of any size.

The scientist studied the behavior of gas under high pressure.

verb

To supply or fuel with gas.

We need to gas up the car before our trip.

Etymology

The word 'gas' is derived from the Greek word 'khaos', meaning 'emptiness'. It was popularized in the 17th century by the chemist Jan Baptista van Helmont.

Common Phrases and Expressions

gas up

To fill a vehicle's gas tank.

let it rip

To accelerate quickly or go fast, often using gas.

blow gas

To waste time or fool around.

Related Words

natural gas

A fossil fuel in the gaseous state, primarily consisting of methane.

gasoline

A liquid fuel used mainly in internal combustion engines.

gaslight

A type of lighting that uses gas as a fuel.

Slang Meanings

Exciting or fun.

That party was total gas!

A lie or exaggeration.

Don't give me that gas!