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delta wave

American  

noun

Physiology.
  1. any of the slow brain waves constituting delta rhythm.


Etymology

Origin of delta wave

First recorded in 1935–40

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

During the delta wave, cases began to rise in the UK in June; they rose in the U.S. in July.

From Slate • Oct. 29, 2022

The recent hospitalization peak saw about 40% fewer people hospitalized with COVID-19 in those four counties than last summer’s delta wave and 75% fewer than the most recent winter omicron wave.

From Seattle Times • Aug. 4, 2022

The delta wave of the coronavirus caused a lull that dropped monthly income from around $40,000 to less than $10,000.

From Washington Post • May 5, 2022

Infections in central New York are approaching levels last seen during last year’s delta wave.

From Washington Post • Apr. 15, 2022

Even when the delta wave ebbed, the toll continued to rise.

From Washington Times • Apr. 13, 2022

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