iaa

from WordNet (r) 3.0 (2006)

IAA
    n 1: a plant hormone promoting elongation of stems and roots
         [syn: {indoleacetic acid}, {IAA}]
    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 [syn: {Islamic Army of
       Aden}, {IAA}, {Islamic Army of Aden-Abyan}, {Aden-Abyan
       Islamic Army}]

from The Collaborative International Dictionary of English v.0.48

IAA \IAA\ n.
   Indoleacetic acid, a plant hormone promoting elongation of
   stems and roots. [Acronym]

   Syn: indoleacetic acid.
        [WordNet 1.5]

from The Collaborative International Dictionary of English v.0.48

indoleacetic acid \in"dole*a*cet"ic ac"id\ ([i^]n"d[=o]l), n.
   (Chem., Bot.)
   A plant hormone ({C10H9NO2}) recognized as the principle
   growth regulator in higher plants; called also {heteroauxin}.
   Abbreviated {IAA}. Chemically it is 1H-indole-3-acetic acid.
   [PJC]

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

IAA
       Initial Address Acknowledgment

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

IAA
       Intel Application Accelerator

[email protected]