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单词 photoperiodism
释义

WordReference Random House Unabridged Dictionary of American English © 2024
pho•to•pe•ri•od•ism  (fō′tə pērē ə diz′əm),USA pronunciation 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  (fō′tō pēr′ē ə disi tē).USA pronunciation 
    • photoperiod + -ism 1915–20

Collins Concise English Dictionary © HarperCollins Publishers::
photoperiodism /ˌfəʊtəʊˈpɪərɪəˌdɪzəm/ n
  1. the response of plants and animals by behaviour, growth, etc, to photoperiods
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