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单词 tropism
释义

WordReference Random House Learner's Dictionary of American English © 2024
tro•pism /ˈtroʊpɪzəm/USA pronunciation   n. 
    [uncountable]
  1. Biologythe growing of an organism toward or away from a stimulus, as light.

WordReference Random House Unabridged Dictionary of American English © 2024
tro•pism  (trōpiz əm),USA pronunciation n. [Biol.]
  1. Biologyan orientation of an organism to an external stimulus, as light, esp. by growth rather than by movement.
  • 1895–1900; independent use of -tropism
tro•pis•mat•ic  (trō′piz matik),USA pronunciation adj.  tro•pis•tic  (trō pistik),USA pronunciation adj. 
-tropism, 
  1. var. of -tropy. 
  • see -tropy, -ism

Collins Concise English Dictionary © HarperCollins Publishers::
tropism /ˈtrəʊpɪzəm/ n
  1. the response of an organism, esp a plant, to an external stimulus by growth in a direction determined by the stimulus
Etymology: from Greek tropos a turn

ˌtropisˈmatic adj tropistic /trəʊˈpɪstɪk/ adj
Collins Concise English Dictionary © HarperCollins Publishers::
-tropism, -tropy n combining form
  1. indicating a tendency to turn or develop in response to a certain stimulus: phototropism
Etymology: from Greek tropos a turn
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更新时间:2024/9/20 15:06:13