Asphyxiation (noun)

1. The state or condition of being asphyxiated or deprived of oxygen.
2. Death caused by lack of oxygen to the body.

Origin:

From the verb "asphyxiate" meaning to cause to die from lack of oxygen.

Examples:

1. The cause of death was asphyxiation due to inhaling toxic fumes.
2. The victims suffered from asphyxiation before the rescue team arrived.
3. Asphyxiation is a serious risk in confined spaces.
4. The asphyxiation was caused by a malfunction in the air conditioning system.
5. The autopsy revealed that the death was caused by asphyxiation.