inert gas

noun

: noble gas

Examples of inert gas in a Sentence

Recent Examples on the Web

The inert gas keeps their rocket hardware safe by pushing out more volatile propellants in the case of a scrub. — Richard Tribou, The Orlando Sentinel, 4 Apr. 2026

Fire officials said the vapor was liquid nitrogen, which was described as inert gas that is non-flammable and non-poisonous. — Justin Muszynski, Hartford Courant, 26 Dec. 2024

An ion engine works by using an inert gas as a propellant; often this gas is xenon, but Takahashi used argon. — Keith Cooper, Space.com, 16 Sep. 2025

To protect the cargo, the capsule is pressurized with nitrogen or some other inert gas. — David Szondy june 22, New Atlas, 22 June 2026

Word History

First Known Use

1902, in the meaning defined above

Rhymes for inert gas

• fiberglass
• fibreglass
• hourglass
• isinglass
• lemongrass
• martinmas
• orchardgrass
• overpass
• plexiglas
• plexiglass
• sassafras
• superclass

Medical Definition

inert gas

noun

: noble gas