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单词 phytochrome
释义

WordReference Random House Unabridged Dictionary of American English © 2024
phy•to•chrome  (fītə krōm′),USA pronunciation n. [Bot.]
  1. Plant Biologya plant pigment that is associated with the absorption of light in the photoperiodic response and that may regulate various types of growth and development.
  • phyto- + -chrome 1890–95

Collins Concise English Dictionary © HarperCollins Publishers::
phytochrome /ˈfaɪtəʊˌkrəʊm/ n
  1. a blue-green pigment existing in two interchangeable forms, present in most plants, that mediates many light-dependent processes, including photoperiodism and the greening of leaves
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