base unit

EnglishEdit

NounEdit

base unit (plural base units)

  1. A unit of measurement which is not itself defined in terms of other units, and from which other units may be derived.
    Synonym: fundamental unit
    The SI unit of velocity is metres per second, derived from the base units metre and second.
  2. The main unit of a computer or hi-fi system.
    When upgrading her computer she bought a new base unit but kept the screen, keyboard and mouse.

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