z/OS

proper noun

a 64-bit operating system for IBM's z/Architecture mainframes, introduced in 2000.

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Meanings

proper noun
  1. IBMa 64-bit operating system for IBM's z/Architecture mainframes, introduced in 2000.
Cite this entry
APA

z/OS. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/z%2FOS

MLA

“z/OS.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/z%2FOS. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “z/OS,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/z%2FOS.

Source: z/OS on Wiktionary, CC BY-SA 4.0.