prebuilt

/priːˈbɪlt/
adjective
  1. Already built or assembled before being sold or used, often in a factory.
    • The prebuilt furniture arrived in one piece, so we didn't need any tools.
    • We bought a prebuilt shed from the hardware store and just had to put it in the yard.
    • Many gamers prefer prebuilt computers because they don't want to assemble the parts themselves.
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