This is a word for dying from lack of oxygen. Anyone who chokes to death dies from asphyxiation.

This is a medical word for a horrible thing that could happen to anyone. Asphyxiation, also known as suffocation, means to die from lack of oxygen. Gangsters in crime movies are always practicing asphyxiation, usually by holding a pillow over someone's head so they can't breathe. You have to be especially careful with small children and asphyxiation risks — if they play with a plastic bag and put it over their head, they could accidentally asphyxiate themselves.

Definitions of asphyxiation

n the condition of being deprived of oxygen (as by having breathing stopped)

asphyxiation is sometimes used as a form of torture”
Type of:
oxygen deficiency causing a very strong drive to correct the deficiency

n killing by depriving of oxygen

choking, strangling, strangulation, throttling
the act of suffocating (someone) by constricting the windpipe
Type of:
kill, killing, putting to death
the act of terminating a life