asphyxiant

[ as-fik-see-uhnt ]

adjective

1. asphyxiating or tending to asphyxiate.

noun

1. an asphyxiating agent or substance.
2. an asphyxiating condition.

asphyxiant

/ æsˈfɪksɪənt /

adjective

1. causing asphyxia

noun

1. anything that causes asphyxia

   carbon monoxide is an asphyxiant

Word History and Origins

Origin of asphyxiant¹

First recorded in 1850–55; asphyxi(ate) + -ant

Example Sentences

Many residents were trapped on higher floors as it spread, and the inquiry found all the victims were dead or unconscious by the time the flames reached them due to "inhalation of asphyxiant gases", primarily carbon monoxide.

From BBC

Phosgene, more deadly than chlorine, was also an asphyxiant—it too caused death by suffocation.

From Literature

They also express concerns about the safety of storing large amounts of carbon dioxide, an asphyxiant, in a densely populated community.

From Seattle Times

Pipelines for CO2 transport the gas at high pressure and at a high enough concentration to make it an asphyxiant.

From The Verge

High concentrations of carbon dioxide, if it leaks out of pipelines or storage wells, can be an asphyxiant to people and wildlife.

From The Verge

Related Words

• mustard gas
• poison gas
• tear gas