Definition of diurnal

Definition of diurnal
  1. diurnal Adjective Happening or occurring during daylight, or primarily active during that time.
  2. diurnal Adjective Said of a flower open, or releasing its perfume during daylight hours, but not at night.
  3. diurnal Adjective Having a daily cycle that is completed every 24 hours, usually referring to tasks, processes, tides, or sunrise to sunset.
  4. diurnal Adjective Done once every day; daily, quotidian.
  5. diurnal Adjective Published daily.
  6. diurnal Noun A flower that opens only in the day.
  7. diurnal Noun A book containing canonical offices performed during the day, hence not matins.
  8. diurnal Noun A diary or journal.
  9. diurnal Noun A daily news publication.
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