zeitgeber

/หˆtsสŒษชtษกeษชbษ™/

IPA: /T S AY1 T G B ER0/

noun
  1. 1

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

Source: https://en.wiktionary.org/wiki/zeitgeber