Brain-dead



complete cessation of brain function as evidenced by absence of brain-wave activity on an electroencephalogram: sometimes used as a legal definition of death.
Contemporary Examples

No Fireworks on Al Jazeera America’s Plodding Debut Lloyd Grove August 20, 2013
Ariel Sharon’s Twilight Zone Lynn Sherr October 18, 2009
Five Lessons the Faltering Music Industry Could Learn From TV Ted Gioia August 2, 2014

noun
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
adj.
brain’-dead’ adj.
brain death
Permanent brain damage resulting in loss of brain function, manifested by cessation of breathing and other vital reflexes, unconsciousness with unresponsiveness to stimuli, absence of muscle activity, and a flat electroencephalogram for a predetermined length of time. Patients who are brain-dead may still exhibit normal function of the heart, lungs, and other vital organs if they are receiving artificial life support.

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