Part of speech: adjective


Part of speech: adverb


Part of speech: adjective

Pertaining to the daytime.

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Usage examples "diurnal":

  1. Thus the diurnal waves of energy also meet a response in the organism. - "The Birth-Time of the World and Other Scientific Essays", J. (John) Joly.
  2. For example, it is diurnal rather than nocturnal and becomes most troublesome in the afternoon. - "Kwaidan: Stories and Studies of Strange Things", Lafcadio Hearn.
  3. Bright colours would not be visible during the night; and there can be no doubt that moths, taken as a body, are much less gaily decorated than butterflies, all of which are diurnal in their habits. - "The Descent of Man and Selection in Relation to Sex, Vol. I (1st edition)", Charles Darwin.