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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 pho·tot·ro·pism /foˈtɑtrəˌpɪzəm/
 屈光性,向光性

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 pho·tot·ro·pism /foˈtɑtrəˌpɪzəm, ˌfotoˈtroˌpɪzəm/ 名詞
 向光性,趨光性

From: Webster's Revised Unabridged Dictionary (1913)

 Pho·tot·ro·pism n.
 1. Plant Physiol. The tendency of growing plant organs to move or curve under the influence of light. In ordinary use the term is practically synonymous with heliotropism.
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From: WordNet (r) 2.0

 phototropism
      n : an orienting response to light