flatline
(also, figurative) An unchanging state, as indicated in a graph of a variable over time.
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US
#1·Apr 27, 2026US
(also, figurative) An unchanging state, as indicated in a graph of a variable over time.
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#2·Apr 27, 2026US
(medicine, cardiology) An asystole; the absence of heart contractions or brain waves.
Origin: From . Refers to a continuous straight line (asystole) on an ECG (EKG) or EEG, indicating death. Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).
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#3·Apr 27, 2026US
(fishing) A line that is run low to the water from the rod tip, generally off a release clip of some type.
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flatfulflatheadflat iron steakflatlandflatlanderflatletflatmateflat outflat passerflat rateflat stickflat store
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