The word for today is…
zeitgeber (noun):
: an environmental agent or event (such as the occurrence of light or dark) that provides the stimulus setting or resetting a biological clock of an organism
Source : Merriam -Webster
Etymology : Zeitgebers are alarm clocks—both biologically and etymologically. The word zeitgeber comes from a combination of two German terms: Zeit, meaning “time,” and Geber, which means “giver.” In nature, zeitgebers tend to be cyclic or recurring patterns that help keep the body’s circadian rhythms operating in an orderly way. For earthlings of all kinds, the daily pattern of light and darkness and the warmer and colder temperatures between day and night serve as zeitgebers, cues that keep organisms functioning on a regular schedule—consider how the changing ratio of day to night in spring serves as a trigger birds to sing their mating songs. For humans, societally imposed cycles, such as the schedule of the work or school day and regular mealtimes, can become zeitgebers as well.
If you enjoyed this BFD word of the day please consider sharing it with your friends and, especially, your children.
