diurnal

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diurnal

 [di-er´nal]
pertaining to or occurring during the daytime, or period of light.

di·ur·nal

(dī-ŭr'năl),
1. Pertaining to the daylight hours; opposite of nocturnal.
2. Repeating once each 24 hours, for example, a diurnal variation or a diurnal rhythm. Compare: circadian.
[L. diurnus, of the day]

diurnal

/di·ur·nal/ (di-er´nal) pertaining to or occurring during the daytime, or period of light.

diurnal

(dī-ûr′nəl)
adj.
1. Relating to or occurring in a 24-hour period; daily.
2. Occurring or active during the daytime rather than at night: diurnal animals.
3. Botany Opening during daylight hours and closing at night.
n.
1. A book containing all the offices for the daily canonical hours of prayer except matins.
2. Archaic
a. A diary or journal.
b. A daily newspaper.

di·ur′nal·ly adv.

diurnal

[dīyo̅o̅r′nəl]
Etymology: L, diurnalis, of a day
happening daily, as sleeping and eating.

diurnal

adjective Daily, during the day.

di·ur·nal

(dī-ŭr'năl)
1. Pertaining to the daylight hours; opposite of nocturnal.
2. Repeating once each 24 hours (e.g., a diurnal variation or a diurnal rhythm).
Compare: circadian
[L. diurnus, of the day]

diurnal

Pertaining to a day. Occurring daily or in a day.

di·ur·nal

(dī-ŭr'năl)
1. Pertaining to the daylight hours.
2. Repeating once each 24 hours.
[L. diurnus, of the day]

diurnal

pertaining to or occurring during the daytime, or period of light.
References in periodicals archive ?
The pattern of incoming photosynthetic photon flux density (PPFD) set a diurnally and seasonally varying upper limit to the incident light levels reaching measured leaves (e.
Crude protein did not vary diurnally in this study.
1113 Table 3 Diurnally adjusted, mean numbers-per-tow of Loligo pealeii from the three annual NEFSC bottom-trawl surveys, 1967-98, by season.
For example, the third North American species in this genus, Callosamia securifera, like the promethea moth, mates diurnally, usually between 1000 and 1400 h, and lays eggs at dusk (Brown, 1972; Tuskes et al.
ochrogaster occupying habitats with sparse cover would lower vulnerability to diurnally feeding predators, especially hawks.
Physically minimizing the ligula and calamus in diurnally active octopuses may further reduce the risk of predation and preserve a male's ability to copulate.
Carbohydrate levels fluctuate diurnally, seasonally, developmentally, and in response to various environmental stimuli.
The diurnally active ant species inhabiting these cays were surveyed each May from 1989 to 1994.
An immediate result was the downward mixing of heat from the thin, diurnally warmed layer at the surface to the sensors at 2.
While seasonal activity patterns differed little between populations, it is important to consider how Sonoran pronghorns allocated time diurnally within a season.
Rootzone temperatures fluctuated diurnally from 17 to 26 [degrees] C in late-May and 25 to 30 [degrees] C in middle and late-summer at the 100-mm depth, where most of the bentgrass roots occupied (Table 4).