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diel

 - 1 dictionary result

di⋅el

[dahy-uhl, dee-]
–adjective Biology.
of or pertaining to a 24-hour period, esp. a regular daily cycle, as of the physiology or behavior of an organism.

Origin:
1930–35; appar. < L di(ēs) day + -al 1 , sp. with e to avoid identity with dial
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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