diurnal Hear it!

diurnal Definition

di·ur·nal (dī ʉrnəl)

adjective

  1. occurring each day; daily
  2. of, done, or happening in the daytime
    1. Bot. opening in the daytime and closing at night: said of a flower
    2. Zool. active in the daytime

Etymology: ME < L diurnalis < diurnus, daily < dies, day: see deity

noun

  1. Archaic a daily newspaper
  2. Eccles. a service book containing prayers for the daytime canonical hours and for compline

diurnal Related Forms
di·ur·nally adverb
diurnal Synonyms

diurnal

modif.

during the day, daytime, once a day, every day; see daily, regular 3.

diurnal Usage Examples

Adjective modifier

  • regular: The regular diurnal, seasonal and solar cycle variations were then removed from the data by substracting from these the quiet standard value.

Modifies a noun

  • raptor: The last group in the diurnal raptors is the true falcons.
  • aberration: The transformation from apparent to topocentric consists of allowing for diurnal aberration.
  • variation: These diurnal variations cease to be sensible at a depth of 2 or 3 meters.
  • rhythm: The difference between these measures cannot be explained by an altered timing of the diurnal rhythm.
  • variability: It could be the diurnal variability of solar input, or the annual or seasonal variation of heating.
  • tide: The wave like structure is caused by the diurnal tide.

Modifying Another Word

  • mainly: Mainly diurnal, with a maximum lifespan of 18 months.
  • predominantly: They are predominantly diurnal ( daytime ) and feed on a variety of heathland plants.

Browse dictionary entries near diurnal

  1. diuretic
  2. diuresis
  3. Diu
  4. ditz
  5. ditty bag (or box)
  6. ditty
  7. ditto mark
  8. ditto
  9. dittany
  10. ditsy
  1. diurnal wander
  2. div
  3. diva
  4. divagate
  5. divalent
  6. divan
  7. divaricate
  8. divarication
  9. divaricator
  10. dive