ajutegevuse pöördumatu lakkamine, millele on iseloomulik aju bioelektrilise aktiivsuse lõppemine ja kõigi reflekside puudumine, irreversible cessation of respiration due to irreparable brain damage, even though the heart may continue beating with the aid of a mechanical ventilator: widely considered as the criterion of death, final cessation of activity in the central nervous system especially as indicated by a flat electroencephalogram for a predetermined length of time
