Definition of diurnal in English:

diurnal

adjective dʌɪˈəːn(ə)ldaɪˈərnl

1Of or during the day.
Example sentencesExamples
- When I was first married I was practically nocturnal, and my wife was diurnal.
- It's now 6am, which is the equivalent of 6pm for all of those conservative diurnal types.
- I'll get maybe three, four good diurnal emissions off per day, I reckon.
- The mercury levels now seem to have changed with diurnal temperature difference narrowing down.
- A feature shared by many clock gene transcripts is that their abundance is subject to circadian and diurnal oscillation.
Synonyms
active during the day, non-nocturnal
daytime
1. 1.1Zoology (of animals) active in the daytime.
  Example sentencesExamples
  Conversely, subdominant fish were diurnal and occupied large home ranges by day but were generally not observed at night.
  The male provides no direct parental care except to protect the eggs against diurnal fish predators.
  Finally, group living often provides diurnal rodents with better predator defenses.
  They are diurnal herbivores, hiding in reef crevices during nighttime and browsing over reefs to feed during the day.
  Accipitrids are diurnal birds of prey with broad wings, hooked beaks, strong legs and feet and sharp talons.
2. 1.2Botany (of flowers) open only during the day.
  Example sentencesExamples
  Are diurnal changes of turgor and leaf growth correlated with each other?
  There are only marginal changes in phosphorylated intermediates in the diurnal time-frame or during tuber development.
  NRA showed important diurnal changes in leaves and roots tissues.
  The sample traces (a, b) are representative of the diurnal pattern of leaf extension rate for each species.
  Ammonium concentrations in roots and leaves undergo diurnal changes.
2Daily; of each day.
diurnal rhythms
Example sentencesExamples
- The APR of maize and Arabidopsis thaliana follows a diurnal rhythm with maximum activity during the light period.
- The diurnal rhythm of cortisol secretion in the horse peaks at approximately 0600 h and is least at approximately 1800 h.
- Moreover, while minor amino acids show marked diurnal rhythms, their contents fluctuate in a co-ordinated manner.
- Today FM, for example, operates to a finely calibrated diurnal rhythm, carefully tuned to the mood of its audience.
- Universal, reliable and even human-made light, completely independent of diurnal rhythm, has abolished the shamanist aspects of our calling.
- The absence of a diurnal rhythm would be a significant difference between growth control in roots and dicot leaves.
- This apparently inefficient system gives us the ability to deal with the natural variability of the diurnal rhythms of light and temperature.
- Experiments were performed always at the same time of the day, to avoid interference with diurnal rhythms.
- This impulse to explore the diurnal is shared by cinema which similarly took everyday objects and put them on exhibit as a form of ‘art’.
- They have their own diurnal cycles, pegged to alien time-frames.
- Too late for conventional diurnal rhythms; too early for genuine nocturnal ones.
- Her diurnal ritual of hurriedly brushing her hair before the mirror expands to one of self-admiration.
- For the most part, this diurnal ritual occurs around 6: 30 a.m.
- What I needed for recovery was a long period of rest in a comfortable setting with a familiar diurnal schedule.
- The transporters show different expression patterns in response to diurnal rhythm.
Synonyms
daily, everyday, day-to-day, quotidian
occurring every day, occurring each day
technical circadian
1. 2.1Astronomy Of or resulting from the daily rotation of the earth.
  diurnal aberration
  Example sentencesExamples
  What mattered was the planet's diurnal position relative to the horizon - whether it was rising in the east or culminating overhead.
  Magnetism, in other words, caused the Earth's Copernican diurnal rotation.
  Right ascension makes it easy to use the apparent diurnal rotation of the celestial sphere as a means to telling time.
  He explained eclipses, solstices and equinoxes, announced the sphericity of the earth and its diurnal revolution on its axis.
  In poetic form, Aryabhata stated that the earth's diurnal rotation on its axis produced the daily rising and setting of planets and stars.

Derivatives

diurnally

adverb

Several diurnally active bird species call or sing at night.
Example sentencesExamples
- Males fly readily both diurnally and nocturnally.
- Experimenters have established the use of a time-compensated sun-compass by homing pigeons and diurnally migrating songbirds.
- The biology, including sexual communication and the ecology of diurnally active species, is poorly understood.
- Nocturnal migrants following coasts and diurnally mobile individuals may also be channeled into those peninsular areas.

Origin

Late Middle English (as a term in astronomy): from late Latin diurnalis, from Latin diurnus 'daily', from dies 'day'.

Rhymes

colonel, eternal, external, fraternal, infernal, internal, journal, kernel, maternal, nocturnal, paternal, supernal, vernal

Definition of diurnal in US English:

diurnal

adjectivedīˈərnldaɪˈərnl

1Of or during the day.
Example sentencesExamples
- When I was first married I was practically nocturnal, and my wife was diurnal.
- I'll get maybe three, four good diurnal emissions off per day, I reckon.
- It's now 6am, which is the equivalent of 6pm for all of those conservative diurnal types.
- The mercury levels now seem to have changed with diurnal temperature difference narrowing down.
- A feature shared by many clock gene transcripts is that their abundance is subject to circadian and diurnal oscillation.
Synonyms
active during the day, non-nocturnal
1. 1.1Zoology (of animals) active in the daytime.
  Example sentencesExamples
  Finally, group living often provides diurnal rodents with better predator defenses.
  Conversely, subdominant fish were diurnal and occupied large home ranges by day but were generally not observed at night.
  They are diurnal herbivores, hiding in reef crevices during nighttime and browsing over reefs to feed during the day.
  Accipitrids are diurnal birds of prey with broad wings, hooked beaks, strong legs and feet and sharp talons.
  The male provides no direct parental care except to protect the eggs against diurnal fish predators.
2. 1.2Botany (of flowers) open only during the day.
  Example sentencesExamples
  There are only marginal changes in phosphorylated intermediates in the diurnal time-frame or during tuber development.
  NRA showed important diurnal changes in leaves and roots tissues.
  Are diurnal changes of turgor and leaf growth correlated with each other?
  The sample traces (a, b) are representative of the diurnal pattern of leaf extension rate for each species.
  Ammonium concentrations in roots and leaves undergo diurnal changes.
2Daily; of each day.
diurnal rhythms
Example sentencesExamples
- The diurnal rhythm of cortisol secretion in the horse peaks at approximately 0600 h and is least at approximately 1800 h.
- This apparently inefficient system gives us the ability to deal with the natural variability of the diurnal rhythms of light and temperature.
- The APR of maize and Arabidopsis thaliana follows a diurnal rhythm with maximum activity during the light period.
- Today FM, for example, operates to a finely calibrated diurnal rhythm, carefully tuned to the mood of its audience.
- Moreover, while minor amino acids show marked diurnal rhythms, their contents fluctuate in a co-ordinated manner.
- They have their own diurnal cycles, pegged to alien time-frames.
- Universal, reliable and even human-made light, completely independent of diurnal rhythm, has abolished the shamanist aspects of our calling.
- Her diurnal ritual of hurriedly brushing her hair before the mirror expands to one of self-admiration.
- The transporters show different expression patterns in response to diurnal rhythm.
- This impulse to explore the diurnal is shared by cinema which similarly took everyday objects and put them on exhibit as a form of ‘art’.
- The absence of a diurnal rhythm would be a significant difference between growth control in roots and dicot leaves.
- For the most part, this diurnal ritual occurs around 6: 30 a.m.
- Experiments were performed always at the same time of the day, to avoid interference with diurnal rhythms.
- What I needed for recovery was a long period of rest in a comfortable setting with a familiar diurnal schedule.
- Too late for conventional diurnal rhythms; too early for genuine nocturnal ones.
Synonyms
daily, everyday, day-to-day, quotidian
1. 2.1Astronomy Of or resulting from the daily rotation of the earth.
  Example sentencesExamples
  He explained eclipses, solstices and equinoxes, announced the sphericity of the earth and its diurnal revolution on its axis.
  In poetic form, Aryabhata stated that the earth's diurnal rotation on its axis produced the daily rising and setting of planets and stars.
  Right ascension makes it easy to use the apparent diurnal rotation of the celestial sphere as a means to telling time.
  Magnetism, in other words, caused the Earth's Copernican diurnal rotation.
  What mattered was the planet's diurnal position relative to the horizon - whether it was rising in the east or culminating overhead.

Origin

Late Middle English (as a term in astronomy): from late Latin diurnalis, from Latin diurnus ‘daily’, from dies ‘day’.

单词	diurnal
释义	Definition of diurnal in English: diurnal adjective dʌɪˈəːn(ə)ldaɪˈərnl 1Of or during the day. Example sentencesExamples When I was first married I was practically nocturnal, and my wife was diurnal. It's now 6am, which is the equivalent of 6pm for all of those conservative diurnal types. I'll get maybe three, four good diurnal emissions off per day, I reckon. The mercury levels now seem to have changed with diurnal temperature difference narrowing down. A feature shared by many clock gene transcripts is that their abundance is subject to circadian and diurnal oscillation. Synonyms active during the day, non-nocturnal daytime 1.1Zoology (of animals) active in the daytime. Example sentencesExamples Conversely, subdominant fish were diurnal and occupied large home ranges by day but were generally not observed at night. The male provides no direct parental care except to protect the eggs against diurnal fish predators. Finally, group living often provides diurnal rodents with better predator defenses. They are diurnal herbivores, hiding in reef crevices during nighttime and browsing over reefs to feed during the day. Accipitrids are diurnal birds of prey with broad wings, hooked beaks, strong legs and feet and sharp talons. 1.2Botany (of flowers) open only during the day. Example sentencesExamples Are diurnal changes of turgor and leaf growth correlated with each other? There are only marginal changes in phosphorylated intermediates in the diurnal time-frame or during tuber development. NRA showed important diurnal changes in leaves and roots tissues. The sample traces (a, b) are representative of the diurnal pattern of leaf extension rate for each species. Ammonium concentrations in roots and leaves undergo diurnal changes. 2Daily; of each day. diurnal rhythms Example sentencesExamples The APR of maize and Arabidopsis thaliana follows a diurnal rhythm with maximum activity during the light period. The diurnal rhythm of cortisol secretion in the horse peaks at approximately 0600 h and is least at approximately 1800 h. Moreover, while minor amino acids show marked diurnal rhythms, their contents fluctuate in a co-ordinated manner. Today FM, for example, operates to a finely calibrated diurnal rhythm, carefully tuned to the mood of its audience. Universal, reliable and even human-made light, completely independent of diurnal rhythm, has abolished the shamanist aspects of our calling. The absence of a diurnal rhythm would be a significant difference between growth control in roots and dicot leaves. This apparently inefficient system gives us the ability to deal with the natural variability of the diurnal rhythms of light and temperature. Experiments were performed always at the same time of the day, to avoid interference with diurnal rhythms. This impulse to explore the diurnal is shared by cinema which similarly took everyday objects and put them on exhibit as a form of ‘art’. They have their own diurnal cycles, pegged to alien time-frames. Too late for conventional diurnal rhythms; too early for genuine nocturnal ones. Her diurnal ritual of hurriedly brushing her hair before the mirror expands to one of self-admiration. For the most part, this diurnal ritual occurs around 6: 30 a.m. What I needed for recovery was a long period of rest in a comfortable setting with a familiar diurnal schedule. The transporters show different expression patterns in response to diurnal rhythm. Synonyms daily, everyday, day-to-day, quotidian occurring every day, occurring each day technical circadian 2.1Astronomy Of or resulting from the daily rotation of the earth. diurnal aberration Example sentencesExamples What mattered was the planet's diurnal position relative to the horizon - whether it was rising in the east or culminating overhead. Magnetism, in other words, caused the Earth's Copernican diurnal rotation. Right ascension makes it easy to use the apparent diurnal rotation of the celestial sphere as a means to telling time. He explained eclipses, solstices and equinoxes, announced the sphericity of the earth and its diurnal revolution on its axis. In poetic form, Aryabhata stated that the earth's diurnal rotation on its axis produced the daily rising and setting of planets and stars. Derivatives diurnally adverb Several diurnally active bird species call or sing at night. Example sentencesExamples Males fly readily both diurnally and nocturnally. Experimenters have established the use of a time-compensated sun-compass by homing pigeons and diurnally migrating songbirds. The biology, including sexual communication and the ecology of diurnally active species, is poorly understood. Nocturnal migrants following coasts and diurnally mobile individuals may also be channeled into those peninsular areas. Origin Late Middle English (as a term in astronomy): from late Latin diurnalis, from Latin diurnus 'daily', from dies 'day'. Rhymes colonel, eternal, external, fraternal, infernal, internal, journal, kernel, maternal, nocturnal, paternal, supernal, vernal Definition of diurnal in US English: diurnal adjectivedīˈərnldaɪˈərnl 1Of or during the day. Example sentencesExamples When I was first married I was practically nocturnal, and my wife was diurnal. I'll get maybe three, four good diurnal emissions off per day, I reckon. It's now 6am, which is the equivalent of 6pm for all of those conservative diurnal types. The mercury levels now seem to have changed with diurnal temperature difference narrowing down. A feature shared by many clock gene transcripts is that their abundance is subject to circadian and diurnal oscillation. Synonyms active during the day, non-nocturnal 1.1Zoology (of animals) active in the daytime. Example sentencesExamples Finally, group living often provides diurnal rodents with better predator defenses. Conversely, subdominant fish were diurnal and occupied large home ranges by day but were generally not observed at night. They are diurnal herbivores, hiding in reef crevices during nighttime and browsing over reefs to feed during the day. Accipitrids are diurnal birds of prey with broad wings, hooked beaks, strong legs and feet and sharp talons. The male provides no direct parental care except to protect the eggs against diurnal fish predators. 1.2Botany (of flowers) open only during the day. Example sentencesExamples There are only marginal changes in phosphorylated intermediates in the diurnal time-frame or during tuber development. NRA showed important diurnal changes in leaves and roots tissues. Are diurnal changes of turgor and leaf growth correlated with each other? The sample traces (a, b) are representative of the diurnal pattern of leaf extension rate for each species. Ammonium concentrations in roots and leaves undergo diurnal changes. 2Daily; of each day. diurnal rhythms Example sentencesExamples The diurnal rhythm of cortisol secretion in the horse peaks at approximately 0600 h and is least at approximately 1800 h. This apparently inefficient system gives us the ability to deal with the natural variability of the diurnal rhythms of light and temperature. The APR of maize and Arabidopsis thaliana follows a diurnal rhythm with maximum activity during the light period. Today FM, for example, operates to a finely calibrated diurnal rhythm, carefully tuned to the mood of its audience. Moreover, while minor amino acids show marked diurnal rhythms, their contents fluctuate in a co-ordinated manner. They have their own diurnal cycles, pegged to alien time-frames. Universal, reliable and even human-made light, completely independent of diurnal rhythm, has abolished the shamanist aspects of our calling. Her diurnal ritual of hurriedly brushing her hair before the mirror expands to one of self-admiration. The transporters show different expression patterns in response to diurnal rhythm. This impulse to explore the diurnal is shared by cinema which similarly took everyday objects and put them on exhibit as a form of ‘art’. The absence of a diurnal rhythm would be a significant difference between growth control in roots and dicot leaves. For the most part, this diurnal ritual occurs around 6: 30 a.m. Experiments were performed always at the same time of the day, to avoid interference with diurnal rhythms. What I needed for recovery was a long period of rest in a comfortable setting with a familiar diurnal schedule. Too late for conventional diurnal rhythms; too early for genuine nocturnal ones. Synonyms daily, everyday, day-to-day, quotidian 2.1Astronomy Of or resulting from the daily rotation of the earth. Example sentencesExamples He explained eclipses, solstices and equinoxes, announced the sphericity of the earth and its diurnal revolution on its axis. In poetic form, Aryabhata stated that the earth's diurnal rotation on its axis produced the daily rising and setting of planets and stars. Right ascension makes it easy to use the apparent diurnal rotation of the celestial sphere as a means to telling time. Magnetism, in other words, caused the Earth's Copernican diurnal rotation. What mattered was the planet's diurnal position relative to the horizon - whether it was rising in the east or culminating overhead. Origin Late Middle English (as a term in astronomy): from late Latin diurnalis, from Latin diurnus ‘daily’, from dies ‘day’.
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