A substance in plants that counteracts the effects of auxin, a plant hormone that promotes growth and development.
From 'anti-' (against) + 'auxin,' from Greek 'auxein' (to grow). Plant biologists created this term to describe compounds that oppose growth-promoting hormones.
It's wild that plants have built-in brakes on their own growth—antiauxins help plants control where they grow and prevent unlimited wild spreading!
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