English Reference
noun

CPU

n.
US /ˌsiˌpiˈju/ cpu

  1. 01 B2 Upper Intermediate Technical Computing

    Stands for Central Processing Unit. This is the main chip in a computer that follows instructions and runs programs.

    Abbreviation for Central Processing Unit. The primary component of a computer that performs most of the processing inside the hardware.

    Simple

    If your CPU gets too hot, the computer might slow down to protect itself.

    In context

    Modern laptops often use multi-core CPUs to handle several demanding applications simultaneously without a drop in performance.

    Usage

    Usually used with 'the' as a singular countable noun.

  2. 02 B2 Upper Intermediate Informal Computing

    A character in a video game that is controlled by the computer rather than a person.

    An entity or opponent in a video game whose actions are determined by the software's artificial intelligence rather than a human player.

    Simple

    I didn't have anyone to play with, so I practiced against the CPU.

    In context

    The game's difficulty settings primarily affect how aggressively the CPU reacts to the player's tactical movements.

    Teacher's tip

    In gaming contexts, 'the CPU' is often treated as a proper name for the computer opponent.

    human player
  3. 03 B2 Upper Intermediate Informal Computing

    The large box or case that holds all the main parts of a desktop computer.

    The chassis or tower of a personal computer, often used metonymically to refer to the entire system unit.

    Simple

    Make sure there is enough space behind the CPU for the cables to fit.

    In context

    While technically incorrect, many office workers refer to the entire metal tower under their desk as the CPU.

    Teacher's tip

    Technically, the CPU is just a small chip, but many people use this word to mean the whole computer box.

    towersystem unitcase
This entry
Level B2 · Upper Intermediate
Frequency Frequent
Updated