English Explanatory Dictionary

diurnal

English dictionary entry

Meanings

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

Pronunciation

/daɪˈɜːnəl/ /daɪˈɝ.nəl/ en-us-diurnal.ogg en-au-diurnal.ogg

Word forms

diurnal diurnals

Etymology

From Latin diurnālis, from diēs (“day”). Doublet of journal.

Synonyms

daily daytime diurnal circadian

Antonyms

nocturnal nightly nondiurnal

Derived words

bidiurnal diurnal aberration diurnal active photolocation diurnal arc diurnalist diurnality diurnally diurnal motion diurnalness equidiurnal intradiurnal nondiurnal semidiurnal sesquidiurnal terdiurnal tridiurnal undiurnal
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