diel

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adjective di·el \ˈdī-əl, -ˌel\

Definition of diel

  1. :  involving a 24-hour period that usually includes a day and the adjoining night <diel fluctuations in temperature>

Origin and Etymology of diel

irregular from Latin dies day + English -al


First Known Use: circa 1935


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WORD OF THE DAY

to decrease in size, extent, or degree

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