photoperiodic

[foh-tuh-peer-ee-uhd]

pho·to·pe·ri·od

[foh-tuh-peer-ee-uhd]
noun Biology.
the interval in a 24-hour period during which a plant or animal is exposed to light.

Origin:
1915–20; photo- + period

pho·to·pe·ri·od·ic [foh-tuh-peer-ee-od-ik] , pho·to·pe·ri·od·i·cal, adjective
pho·to·pe·ri·od·i·cal·ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To photoperiodic

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Photoperiodic is always a great word to know.
So is ort. Does it mean:
a scrap or morsel of food left at a meal.
the offspring of a zebra and a donkey.
Collins
World English Dictionary
photoperiod (ˌfəʊtəʊˈpɪərɪəd)
 
n
See also photoperiodism the period of daylight in every 24 hours, esp in relation to its effects on plants and animals
 
photoperi'odic
 
adj
 
photoperi'odically
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
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