1. In a state of asphyxia
   "A 52 year old farm worker entered an oxygen limiting silo through the top opening and was asphyxiated"

1. Be asphyxiated; die from lack of oxygen
   "The child asphyxiated under the pillow";
   - suffocate, stifle
    
2. Deprive of oxygen and prevent from breathing
   "Othello asphyxiated Desdemona with a pillow";
   - smother, suffocate
    
3. Impair the respiration of or obstruct the air passage of
   "The foul air was slowly asphyxiating the children";
   - suffocate, stifle, choke

Type of: block, buy the farm [N. Amer, informal], cash in [informal], cash in one's chips [informal], close up, conk [informal], cop it [Brit, informal], croak [informal], decease [archaic], die, drop dead [informal], exit, expire, flatline [informal], give up the ghost [informal], go, impede, jam, kick the bucket [informal], kill, obstruct, obturate, occlude, pass, pass away, pass on, perish, pop off [informal], pop one's clogs [informal], snuff it [informal]

Encyclopedia: Asphyxiated