Bible Dictionaries
Phototropism
Webster's Dictionary
(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 heliotropism.
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Bibliography Information
Webster, Noah. Entry for 'Phototropism'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/p/phototropism.html. 1828.