from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A rhythmically occurring cue given by the environment, such as a change in light or temperature, to reset the internal body clock.


German Zeitgeber, "time-giver". (Wiktionary)



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  • A naturally occurring cue, such as light or temperature, which regulates biological rhythms; something which influences or regulates the timing or rhythm of something else. (From Double-Tongued Dictionary)

    July 26, 2008