What is the meaning of Phototonus?

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(n.) An irritable condition of protoplasm, resulting in movement, due to a certain intensity of light.
(n.) A motile condition in plants resulting from exposure to light.

Webster's Revised Unabridged Dictionary

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APA	Webster's. (2011). phototonus. Retrieved September 26, 2026, from http://smartdefine.org/phototonus/definitions/2045019
Chicago	Webster's. 2011. "phototonus" http://smartdefine.org/phototonus/definitions/2045019 (accessed September 26, 2026).
Harvard	Webster's 2011, phototonus, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/phototonus/definitions/2045019>.
MLA	Webster's. "phototonus" 27 May 2011. Web. 26 September 2026. <http://smartdefine.org/phototonus/definitions/2045019>

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