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ISA (countable and uncountable, plural ISAs)

  1. (computing) Initialism of instruction set architecture.
  2. (UK, finance) Initialism of individual savings account, a financial account for investment with special tax rules.
  3. (accounting) Initialism of International Standard on Auditing, one of a set of professional standards for the performance of audits of financial information issued by the IAASB.
  4. (Europe, transport) Initialism of intelligent speed assistance / adaptation.
  5. (chemistry) Initialism of isosaccharinic acid.
  6. (Marxism) Initialism of ideological state apparatus.
    • 2018 September 29, Roger Burrows, “On Neoreaction”, in The Sociological Review Magazine[1]:
      They have come to think of the universities, the civil service, and the media – the old Althusserian ISAs – with its orthodoxy of egalitarianism, democracy and social constructionism, as the Cathedral; a quasi-religious structure that functions hegemonically to supress dissent.

Proper noun[edit]


  1. (computing) Initialism of Industry Standard Architecture, an early type of personal computer expansion slot bus.

Coordinate terms[edit]

(expansion slot type):