Definition of plant hormone
: an organic substance other than a nutrient that in minute amounts modifies a plant physiological process; especially : one produced by a plant and active elsewhere than at the site of production
First Known Use of plant hormone
Rhymes with plant hormone
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Medical Definition of plant hormone
: an organic substance other than a nutrient that in minute amounts modifies a plant physiological process; especially : one produced by a plant and active elsewhere than at the site of production—called also phytohormone
Learn More about plant hormone
Medical Dictionary: Definition of "plant hormone"
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