noun
the turning or bending movement of an organism or a part toward or away from an external stimulus, such as light, heat, or gravity
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The plant exhibited positive phototropism by growing towards the light source.
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I noticed the plant bending towards the window, it's called tropism.
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The plant is totally obsessed with sunlight, it's like it has tropism or something.
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His career showed a clear tropism towards leadership roles.