01 n. The tendency of growing plant organs to move or curve under the influence of light. In ordinary use the term is practically synonymous with…
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1.
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.(Plant Physiol.) See: heliotropism
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2.
exhibiting movement in a direction toward (positive phototropism) or away from (negative phototropism) a source of light.(Microbiology)