Definition of "flatlines" [flatlines]

• Third-person singular simple present indicative form of flatline. (verb)

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• "There is a belief that once you reach a certain level of obscurity — say, once the number of people subscribing to your lifestream flatlines to zero — you may simply cease to exist."
• "After resuscitation, 'Three Rivers' pilot flatlines anyway - USATODAY. com"
• "After resuscitation, 'Three Rivers' pilot flatlines anyway"