ISO

1. Short for International Organization for Standardization, ISO is derived from the Greek isos, meaning "equal", which is the root of the prefix "iso-". Founded in 1947 the ISO is a worldwide federation of national standards bodies from some 140 countries.
   
   The first ISO standard was published in 1951 with the title, "Standard reference temperature for industrial length measurement".
   
   The official ISO page can be found at http://www.iso.org.
   
   
2. ISO is also short for ISO image.

Also see: DIN, ECMA, GKS, ISO 9241-3, ISO 9660, ISO image