What does the word diurnal mean?

    Part of speech: adjective

  • Daily.

  • Part of speech: adverb


  • Part of speech: adjective

  • Pertaining to the daytime.

Usage examples for 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 by 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 by 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) by Charles Darwin