iaa Meaning, Definition & Usage

  1. noun a plant hormone promoting elongation of stems and roots
    indoleacetic acid.
  2. noun 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
    Aden-Abyan Islamic Army; Islamic Army of Aden-Abyan; Islamic Army of Aden.

WordNet