asphyxia

noun

as·​phyx·​ia as-ˈfik-sē-ə 

əs-

1

: a lack of oxygen or excess of carbon dioxide in the body that results in unconsciousness and often death and is usually caused by interruption of breathing or inadequate oxygen supply

2

: the state of being stifled or suppressed

As a patient in hospital I felt both anguish and asphyxia—the anguish of being confronted with dissolution, and asphyxia because I could not be heard.

—Oliver Sacks

Examples of asphyxia in a Sentence

The cause of death was asphyxia.

Recent Examples on the Web

The immigrant’s family was told by the El Paso County Medical Examiner’s Office on Wednesday that a preliminary autopsy report said the death was a homicide resulting from asphyxia from chest and neck compression, according to a recording of the call reviewed by the AP. —Michael Biesecker, Los Angeles Times, 16 Jan. 2026

According to the Medical Examiner’s Office report, the child’s cause of death was asphyxia due to neck compression, and her manner of death was an accident. —Teri Figueroa, San Diego Union-Tribune, 31 Dec. 2025

Her death has been ruled a homicide by mechanical asphyxia. —Sarah Rumpf-Whitten , Stepheny Price, FOXNews.com, 17 Dec. 2025

The grandmother of a girl whose body was found underneath a bed on Carnival cruise ship earlier this month said the FBI told the family the teen likely died from asphyxia. —David Goodhue, Miami Herald, 24 Nov. 2025

Word History

Etymology

New Latin, from Greek, stopping of the pulse, from a- + sphyzein to throb

First Known Use

1778, in the meaning defined at sense 1

Kids Definition

asphyxia

noun

as·​phyx·​ia as-ˈfik-sē-ə 

: a lack of oxygen or excess of carbon dioxide in the body usually caused by interruption of breathing or insufficient oxygen supply and resulting in unconsciousness and often death

Medical Definition

asphyxia

noun

as·​phyx·​ia as-ˈfik-sē-ə, əs- 

: a lack of oxygen or excess of carbon dioxide in the body that is usually caused by interruption of breathing and that causes unconsciousness compare suffocation

asphyxial

-sē-əl 

adjective