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pho•to•pe•ri•od•ism



Pronunciation: (fō"tu-pēr'ē-u-diz"um), [key]
n. Biol.
the response, as affecting growth or reproduction, of an organism to the length of exposure to light in a 24-hour period. Also called pho•to•pe•ri•o•dic•i•ty Pronunciation: (fō"tō-pēr"ē-u-dis'i-tē). [key]

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

photoperiodphotophilic

 

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