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1. Oxford American Dictionary

   auxin

   • IPA[ˈôksən]

   美式

   • n.
     a plant hormone which causes the elongation of cells in shoots and is involved in regulating plant growth

   • noun: auxin, plural noun: auxins

2. • 釋義

   n.

   名詞

   • 1. a plant hormone which causes the elongation of cells in shoots and is involved in regulating plant growth the apex of a growing stem produces auxin gibberellin interacts with cytokinins and auxins