Definition of expansion slot in English:

expansion slot

Syllabification: ex·pan·sion slot

noun

Computing
  • A place in a computer where an expansion card can be inserted.
    More example sentences
    • The main card body includes a coupling portion for coupling the expansion card to an expansion slot of the computer.
    • If a nurse wants reference programs, he or she should purchase a handheld computer that has an expansion slot for memory.
    • The company designed the card because PDAs typically contain a single expansion slot, and may not have WiFi built in.

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