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portability (usually uncountable, plural portabilities)

  1. The quality of being portable.
    1. (software) The ability of a program (or software system) to execute properly on multiple hardware platforms.
    2. The ability of an employee to move between different social security schemes without losing their contributions.
    3. The ability of a telephone subscriber to keep their number when switching to a different network.
      • 1999, United States. Congress. House. Committee on Commerce. Subcommittee on Telecommunications, Trade, and Consumer Protection, Reauthorization of the Federal Communications Commission: Hearing Before the Subcommittee on Telecommunications, Trade, and Consumer Protection of the Committee on Commerce, House of Representatives, One Hundred Sixth Congress, First Session, March 17, 1999, page 117:
        [] number portability is crucial for competition, because it enables consumers to change service providers without being forced to change their phone number. Number portability is a statutory requirement, and it imposes costs on all []