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1. A plant hormone promoting elongation of stems and roots
   - indoleacetic acid
    
2. Yemen-based terrorist group that supports al-Qaeda's goals; seeks to overthrow the Yemeni government and eliminate United States interests; responsible for bombings and kidnappings and killing western tourists in Yemen
   - Islamic Army of Aden, Islamic Army of Aden-Abyan, Aden-Abyan Islamic Army

Type of: auxin, foreign terrorist organisation [Brit], foreign terrorist organization, FTO, terrorist group, terrorist organisation [Brit], terrorist organization

Encyclopedia: IAA