noun
a plant hormone that promotes the abscission of leaves, flowers, and fruits
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Abscisins are a class of plant hormones that regulate various physiological processes in plants.
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I read that abscisin is responsible for plant dormancy during winter.
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Have you heard about abscisin? It's like the boss hormone in plants.
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Just like how abscisin tells plants when to shed their leaves, sometimes we need a signal to let go of things in our lives.