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Definition of: diaheliotropism
(dī′ə·hē′lē·ot′rə·piz′əm) noun Bot.
A turning of plant organs so as to assume a position transverse to the light; transverse heliotropism.
—di·a·he·li·o·trop·ic (dī′ə·hē′lē·ə·trop′ik, -trō′pik) adjective
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