1. auxin

noun. a plant hormone that promotes root formation and bud growth.


  • indoleacetic acid
  • indolebutyric acid
  • IAA
  • plant hormone
  • growth regulator


  • αὐξάνειν (Ancient Greek (to 1453))

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Sentences with auxin

1. Noun, singular or mass
Create a hole in the rooting medium that will accommodate the cutting and prevent the auxin compound from being removed as you plant.

2. Verb, base form
Although resistance to auxin inhibitors is a cause for concern, the University of Florida states that the low percentage of resistance reported are good results for a synthetic herbicide used over the course of six decades.

3. Adjective
To prevent damage to plants, never use auxin inhibitors around non-weed broadleaf plants, or plants that are susceptible to the herbicide.

4. Verb, non-3rd person singular present
Blue light absorbed by photoreceptors stimulates auxin to move laterally across the stem and leaves of plants to the side which is away from the light.