/zed/ <language, specification> 1. (After Zermelo-Fränkel set theory) A specification language developed by the Programming Research Group at Oxford University around 1980. Z is used for describing and modelling computing systems. It is based on axiomatic set theory and first order predicate logic. Z is written using many non-ASCII symbols. It was used in the IBM CICS project.
See also Z++.
["Understanding Z", J.M. Spivey, Cambridge U Press 1988].