IAA
  國際航太文摘
  IAA
       n 1: a plant hormone promoting elongation of stems and roots
            [syn: 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 killling Western tourists in Yemen [syn: Islamic
          Army of Aden, Islamic Army of Aden-Abyan, Aden-Abyan
          Islamic Army]