Main definitions of ISO in US English:

: ISO1ISO2

ISO1

abbreviation

  • International Organization for Standardization.

Origin

From Greek isos ‘equal’; the term is often erroneously thought to be an abbreviation.

Pronunciation

ISO

/ˌaiesˈoʊ/

Main definitions of ISO in US English:

: ISO1ISO2

ISO2

abbreviation

historical
  • (in the UK) Imperial Service Order, awarded to British and Commonwealth civil servants (discontinued in 1993).