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A Writer's Dictionary:

auxin Definition


Dictionary Home » Words Starting with A » autoroute ... Avogadro's constant » auxin


auxin
noun
    1. bot.
      Any of numerous plant hormones that promote growth of plant tissues by an increase in the size of existing cells, rather than an increase in cell number, and are used commercially as rooting powders and weedkillers.
Etymology: 1930s: from Greek auxein to increase.



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