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Definition of phototropism noun from the Oxford Advanced Learner's Dictionary

phototropism

noun

/ˌfəʊtəʊˈtrəʊpɪzəm/

/ˌfəʊtəʊˈtrəʊpɪzəm/

[uncountable] (biology)

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the action of a plant turning towards or away from light

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See phototropism in the Oxford Advanced American Dictionary

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noun

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B2

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