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語源

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

発音

• (Received Pronunciation) IPA: /daɪˈɜːnəl/ enPR: dī-ûr′nəl
• (General American) IPA: /daɪˈɝ.nəl/
• 韻: -ɜː(ɹ)nəl

形容詞

diurnal (not comparable)

1. Happening or occurring during daylight, or primarily active during that time.

   Most birds are diurnal.

   • 1972, Laurence Monroe Klauber, Rattlesnakes: Their Habits, Life Histories, and Influence on Mankind, Volume 1‎:

     However, in general, lizards are more diurnal than rattlers, which may be one of the reasons why young rattlers are more diurnal than adults.

   • c. 1604–1605 (date written), William Shakespeare, “All’s Well, that Ends Well”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act II, scene v]:

     Ere twice the horses of the sun shall bring / Their fiery torcher his diurnal ring.

2. (botany) 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. (uncommon) Done once every day; daily, quotidian.
5. (archaic) Published daily.

引用

• For quotations using this term, see Citations:diurnal.

同意語

• (having a daily cycle): circadian (biology)

反意語

• (antonym(s) of “happening or active during the day”): nocturnal, nightly
• (antonym(s) of “active or open during the day”): nocturnal

等位語

• (active or open during the day): crepuscular (active during twilight; dawn or dusk)
• (active or open during the day): matutinal (active during dawn)
• (active or open during the day): vespertine (active during dusk)
• (active or open during the day): diel (having a 24-hour period, regardless of day or night)

派生語

名詞

diurnal (plural diurnals)

1. A flower that opens only in the day.
2. (Catholicism) A book containing canonical offices performed during the day, hence not matins.
3. (archaic) A diary or journal.
   • 1663, Samuel Butler, Hudibras, part 1, canto 2:

     He was by birth, some authors write, / A Russian, some a Muscovite, / And 'mong the Cossacks had been bred, / Of whom we in diurnals read.

4. (archaic) A daily news publication.