diurnal
Use Diurnal in a sentence
nl adjective
1.
of or pertaining to a day or each day; daily.
2.
of or belonging to the daytime ( opposed to nocturnal ).
3.
Botany. showing a periodic alteration of condition with day and night, as certain flowers that open by day and close by night.
4.
active by day, as certain birds and insects ( opposed to nocturnal ).
noun
5.
Liturgy. a service book containing offices for the daily hours of prayer.
6.
Archaic. a diary.
7.
Archaic. a newspaper, especially a daily one.
00:10
Diurnal
is always a great word to know.
So is alternation of generations. Does it mean:
| organism that has a nucleus containing genetic material |
| variation in an organism's life cycle of dissimilar reproductive forms |
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
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Link To diurnal
Collins
World English Dictionary
diurnal (daɪˈɜːnəl) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —adj | |
| 1. | happening during the day or daily |
| 2. | (of flowers) open during the day and closed at night |
| 3. | Compare nocturnal (of animals) active during the day |
| —n | |
| 4. | a service book containing all the canonical hours except matins |
| [C15: from Late Latin diurnālis, from Latin diurnus, from diēs day] | |
| di'urnally | |
| —adv | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
diurnal
late 14c., from L.L. diurnalis, from diurnum "day," from L. diurnus "daily," from dies "day" + -urnus, an adj. suffix denoting time (cf. hibernus "wintery"). Dies "day" is from PIE base *dyeu- (cf. Skt. diva "by day," Welsh diw, Bret. deiz "day;" Arm. tiw; Lith. diena; O.C.S. dini, Pol. dzien, Rus.
den), lit. "to shine" (cf. Gk. delos "clear;" L. deus, Skt. deva "god," lit. "shining one;" Avestan dava- "spirit, demon;" Lith. devas, O.N. tivar "gods;" O.E. Tig, gen. Tiwes, see Tuesday).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
diurnal di·ur·nal (dī-ûr'nəl)
adj.
Having a 24-hour period or cycle; daily.
Occurring or active during the daytime rather than at night.
di·ur'nal·ly adv.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
diurnal (dī-ûr'nəl) Pronunciation Key
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The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
That diurnal migration is something that the research team here hopes to shed some light on.
Dogs are diurnal, so they generally tend to sleep through the night, and mine do.
Treat him as you would a baby that you're trying to get on a diurnal schedule.
We should see the days are warming faster than days and the diurnal temperature differences increasing.
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