flatline

/ˈflætˌlaɪn/ · noun

Meaning

An asystole; the absence of heart contractions or brain waves.
The disappearance of the rhythmic peaks displayed on a heart monitor.
The disappearance of brain waves on an electroencephalogram.
An unchanging state, as indicated in a graph of a variable over time.
A line that is run low to the water from the rod tip, generally off a release clip of some type.
To stop beating.
To die.
To kill.
To remain at the same level, without development; or, to fall.
To experience significantly decreased rates of change compared to previous rates of change.
To fish using a flatline.

From flat + line. Refers to a continuous straight line (asystole) on an ECG (EKG) or EEG, indicating death.

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