Verb
flatten the curve (third-person singular simple present flattens the curve, present participle flattening the curve, simple past and past participle flattened the curve)
(epidemiology, colloquial) To reduce the rate at which an infection spreads during an epidemic, decreasing the number of active cases at any given time by increasing the period of time over which numbers of similar cases occur.
Flatten the curve," he wrote, promoting the idea of social distancing to prevent further spread of the disease. Source: Internet
They really should shut those down to Flatten the curve. Source: Internet