Dictionary Home »
Webster's New World College Dictionary » photoperiodism
photoperiodism
photoperiodism definition
photo·peri·od·ism (fōt′ō pir′ē əd iz′əm)
noun
Biol. the behavioral or physiological reaction of an organism to variations in the duration of light, as, in plants, by flowering or ceasing to flower, or, in certain animals, by changing the daily cycle of activities
also photoperiodicity pho′to·pe′rio·dic′·ity (-ə dis′ə tē)
Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.
Browse dictionary definitions near photoperiodism
Share on Facebook
effect of photoperodism was first studied in 1920 by garmer and allard
Posted by itrat 105 days ago.