diurnal

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diurnal

1. (of flowers) open during the day and closed at night

2. (of animals) active during the day

3. a service book containing all the canonical hours except matins

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

diurnal

(dÿ-er -năl) Happening during a 24-hour day; daily.

Collins Dictionary of Astronomy © Market House Books Ltd, 2006

Diurnal

(religion, spiritualism, and occult)

Diurnal means “of or belonging to the day.” In classical astrology, particular planets were classified as diurnal and others as nocturnal, no matter where they were in a horoscope. In contemporary astrology, planets are diurnal if they are located above the horizon (i.e., in houses seven through 12). Often astrologers will say that planets above the horizon line show their influence more in the public sphere, whereas planets below the horizon are more private, but this distinction clearly breaks down when considering planets in such locations as the twelfth house (a largely private house situated above the horizon). The term “diurnal arc” refers to the distance, expressed in degrees and minutes of a circle, that a planet traverses between its rising in the east and its setting in the west. Classical astrology also classified signs as diurnal (the masculine signs) and nocturnal (the feminine signs).

Sources:

Bach, Eleanor. Astrology from A to Z: An Illustrated Source Book. New York: Philosophical Library, 1990.

Brau, Jean-Louis, Helen Weaver, and Allan Edmands. Larousse Encyclopedia of Astrology. New York: New American Library, 1980.

diurnal

[dī′ərn·əl]

(biology)

Active during daylight hours.

(science and technology)

Occuring during the daytime.

References in periodicals archive ?

The results of final body weight, specific growth rate, weekly weight gain, fish yield and PER for the nocturnally, and nocturnally and diurnally aerated tanks were significantly higher than those on the non-aerated tanks (Table 2; ANOVA, p < 0.05).

Association between nocturnal and diurnal aeration in Nile tilapia rearing tanks/Associacao entre aeracao noturna e diurna em tanques de cultivo de tilapia do Nilo

The CWSI of rice from different treatments varied diurnally for clear weather in the same pattern (Fig.

Diagnosing Crop Water Stress of Rice using Infra-red Thermal Imager under Water Deficit Condition

The wild fish lingered in the nursery for 3 days after release, and documented movements indicate a bimodal pattern of higher numbers of the wild fish in the nursery during the day than during the night, indicating that the fish were diurnally active (Fig.

Acoustic tagging and monitoring of cultured and wild juvenile crimson jobfish (Pristipomoides filamentosus) in a nursery habitat

The number of diurnally fluctuating coral genes identified here and by Levy et al.

Transcriptome-wide changes in coral gene expression at noon and midnight under field conditions

Fifth, hematologic and biochemical results may vary seasonally, monthly, or diurnally, as well as by age, sex, or time of day.

Reference intervals, longitudinal analyses, and index of individuality of commonly measured laboratory variables in captive bald eagles (Haliaeetus leucocephalus)

In late spring we detected a significant shift in predation activity toward a slight preponderance of diurnally active insects, especially Hymenoptera.

Red widow spiders (Araneae: Theridiidae) prey extensively on scarab beetles endemic in Florida scrub

Besides being most prominently pollinated by diurnally and nocturnally active, small- and large-bodied beetle groups, the Annonaceae during their evolutionary history have adapted also to thrips (Thysanoptera), e.g., in Bocageopsis or Popowia (MOMOSE et al., 1998), to cockroaches (one documented case in Uvaria elmeri; NAGAMITSU and INOUE, 1997), to flies (e.g.

Evolutionary steps in the reproductive biology of annonaceae/A evolucao da biologia reprodutiva de annonaceae

Landry, "Profiles of novel diurnally regulated genes in mouse hypothalamus: expression analysis of the cysteine and histidine-rich domain-containing, zinc-binding protein 1, the fatty acid-binding protein 7 and the GTPase, ras-like family member 11b," Neuroscience, vol.

Small G proteins Dexras1 and RHES and their role in pathophysiological processes

Oleoylethanolamide (OEA), an endogenous PPAR[alpha] agonist, is synthesized diurnally in the gut epithelium [39].

PPARs integrate the mammalian clock and energy metabolism

The diurnally evolving structure of the planetary boundary layer (PBL) for a typical synoptic high-pressure system is described by Stull [1].

Spatial and temporal variation in PBL height over the Korean peninsula in the KMA operational regional model

AO-0001 treatment of BJAB cells altered regulation of diurnally regulated genes with circadian orthologs.

Diarylheptanoids from Alpinia officinarum cause distinct but overlapping effects on the translatome of B lymphoblastoid cells

Assuming ambient outdoor temperatures cycle diurnally around the phase change point, including a PCM effectively delays and attenuates temperature swings.