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chromotropism

noun chro·mot·ro·pism \ krōˈmä‧trəˌpizəm \
variants: or less commonly chromotropy \-pē\

Definition of chromotropism

plural chromotropisms also chromotropies
1 : change of color especially of certain salts known in differently colored modifications — compare chromoisomerism
2 : the orientation of living organisms in relation to color stimuli — compare tropism

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