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

diurnal

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

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).
The CWSI of rice from different treatments varied diurnally for clear weather in the same pattern (Fig.
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.
The number of diurnally fluctuating coral genes identified here and by Levy et al.
Fifth, hematologic and biochemical results may vary seasonally, monthly, or diurnally, as well as by age, sex, or time of day.
In late spring we detected a significant shift in predation activity toward a slight preponderance of diurnally active insects, especially Hymenoptera.
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.
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.
Oleoylethanolamide (OEA), an endogenous PPAR[alpha] agonist, is synthesized diurnally in the gut epithelium [39].
The diurnally evolving structure of the planetary boundary layer (PBL) for a typical synoptic high-pressure system is described by Stull [1].
AO-0001 treatment of BJAB cells altered regulation of diurnally regulated genes with circadian orthologs.
Assuming ambient outdoor temperatures cycle diurnally around the phase change point, including a PCM effectively delays and attenuates temperature swings.