a lock capable of being opened either by a master key or a change key, each operating its own mechanism.


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  • Duplex-process

    noun 1. any of several methods for making steel in which the process is begun in one furnace and finished in another.

  • Duplex-pump

    noun 1. a pair of direct-acting steam pumps so arranged that each pump begins its working stroke just as the other finishes its working stroke, so that the rate of flow of the fluid is nearly continuous.

  • Duplex uterus

    duplex uterus n. A uterus with a double lumen.

  • Duplicable

    [doo-pli-kuh-buh l, dyoo-] /ˈdu plɪ kə bəl, ˈdyu-/ adjective 1. capable of being .

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