zeitgeber

zeit·geb·er

Z5009650 (tsīt′gĕb′ər, zīt′-)n. An external stimulus or cue, such as daylight or a regularly repeated occurrence, that serves to regulate an organism's biological clock.

[German Zeitgeber : Zeit, time; see Zeitgeist + Geber, giver (from geben, to give, from Middle High German, from Old High German geban; see ghabh- in Indo-European roots).]

zeitgeber

(ˈtsaɪtˌɡeɪbə) n (Biology) biology an agent or event, such as light or the tide, that triggers the biological clock of organisms

zeit•ge•ber

(ˈtsaɪtˌgeɪ bər)
n. an environmental cue, as the length of daylight or the degree of temperature, that helps to regulate the cycles of an organism's biological clock. [1970–75; < German (1954), literally, time-giver]

zeitgeber

(tsīt′gĕb′ər, zīt′-)n. An external stimulus or cue, such as daylight or a regularly repeated occurrence, that serves to regulate an organism's biological clock.

zeitgeber

A factor in the environment that has periodicity and is capable of synchronising the endogenous circadian rhythm into a 24-hour cycle. Without zeitgebers, the free-running human clock has long been believed to be about 25.3 hours; more recent work by Charles A. Czeisler MD, PhD, pegs the internal human clock at 24 hours and 11 minutes, ±16 minutes.

zeitgeber

Zeit, German, time, geber, keeper A factor in the environment with a periodicity, capable of synchronizing the endogenous circadian rhythm into a 24-hr cycle; without zeitgebers, the free-running human clock is 25.3 hrs. See Circadian rhythm, Jet lag, Shift work, Sleep disorders. Cf REM sleep.

zeitgeber

(tsīt′gā″bĕr, zīt′) [Ger. Zeitgeber, timekeeper] Any of the mechanisms in nature that keep internal biological clocks synchronized (entrained) with the environment. Zeitgebers can be physical, involving light or temperature (e.g., sunrise, sunset), or social, involving regular activities (e.g., consistent mealtimes).

单词	zeitgeber
释义	zeitgeber zeit·geb·er Z5009650 (tsīt′gĕb′ər, zīt′-)n. An external stimulus or cue, such as daylight or a regularly repeated occurrence, that serves to regulate an organism's biological clock. [German Zeitgeber : Zeit, time; see Zeitgeist + Geber, giver (from geben, to give, from Middle High German, from Old High German geban; see ghabh- in Indo-European roots).] zeitgeber (ˈtsaɪtˌɡeɪbə) n (Biology) biology an agent or event, such as light or the tide, that triggers the biological clock of organisms zeit•ge•ber (ˈtsaɪtˌgeɪ bər) n. an environmental cue, as the length of daylight or the degree of temperature, that helps to regulate the cycles of an organism's biological clock. [1970–75; < German (1954), literally, time-giver] Zeitgeber Zeitgeber [′tsīt‚gā·bər] (physiology) A periodic environmental condition or event that acts to set or reset an innate biological rhythm of an organism. zeitgeber zeitgeber (tsīt′gĕb′ər, zīt′-)n. An external stimulus or cue, such as daylight or a regularly repeated occurrence, that serves to regulate an organism's biological clock. zeitgeber A factor in the environment that has periodicity and is capable of synchronising the endogenous circadian rhythm into a 24-hour cycle. Without zeitgebers, the free-running human clock has long been believed to be about 25.3 hours; more recent work by Charles A. Czeisler MD, PhD, pegs the internal human clock at 24 hours and 11 minutes, ±16 minutes. zeitgeber Zeit, German, time, geber, keeper A factor in the environment with a periodicity, capable of synchronizing the endogenous circadian rhythm into a 24-hr cycle; without zeitgebers, the free-running human clock is 25.3 hrs. See Circadian rhythm, Jet lag, Shift work, Sleep disorders. Cf REM sleep. zeitgeber (tsīt′gā″bĕr, zīt′) [Ger. Zeitgeber, timekeeper] Any of the mechanisms in nature that keep internal biological clocks synchronized (entrained) with the environment. Zeitgebers can be physical, involving light or temperature (e.g., sunrise, sunset), or social, involving regular activities (e.g., consistent mealtimes). ThesaurusSeebiological clock
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