photoperiod
noun
the interval in a 24-hour period during which a plant or animal is exposed to light.
photoperiodic
-
a word derived from
photoperiod.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
This clock directly influences the photoperiodic pathway, which regulates flowering in response to day length.
From Science Daily ● Feb. 23, 2024
We learned that mutations in clock genes that change circadian period also change other aspects of timing, from frequencies of fruitfly courtship songs, to developmental timing in nematodes, to photoperiodic responses, to reproductive cycles.
From Scientific American ● May 30, 2012
Fall-mating species, such as goats, mated in spring when the photoperiodic cupid beguiled them with shortening days.
From Time Magazine Archive
Onset of the breeding season in late winter is relatively abrupt, and seemingly is a photoperiodic response.
From Ecological Observations on the Woodrat, Neotoma floridana by Henry S. Fitch
