flatlined, flatlines, flatlining
To show a horizontal line on a monitor indicating no electrical activity in an electrocardiogram or an electroencephalogram.
To cease to live, flourish, or succeed; die literally or figuratively.
Webster's New World
American Heritage Medicine
To be in an unchanging condition.
Participation in civic activities has flatlined in recent years.
(intransitive) (of the heart) To stop beating.
Being or relating to an electrocardiogram or an electroencephalogram that demonstrates no electrical activity.
An unchanging state, as indicated in a graph of a variable over time.
Asystole; the absence of heart contractions or brain waves.
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