built so as to be an integral and permanent part of a larger construction:
The wall has a built-in bookcase.
existing as a natural or characteristic part of something; inherent:
a built-in contempt for daydreaming.
a built-in piece of furniture or appliance.
an additional feature or capability, as of a machine or a service:
a car with power steering, power brakes, and other built-ins.
Contemporary Examples

The Gregory Brothers and the Rise of the Remix Video Jackie Snow February 3, 2011
How Crowdfunding Can Get You Money Online Brian Ries January 19, 2011
The Art of Smutty Spoofs: Porn Parodies Aren’t a Joke Anymore Aurora Snow March 14, 2014
How Your Pacemaker Will Get Hacked Kaiser Health News November 16, 2014
The Attack on the Hidden Internet Marc Rogers December 28, 2014

Historical Examples

Our Legal Heritage, 5th Ed. S. A. Reilly
Accidental Death Peter Baily
Three Times and Out Nellie L. McClung
Free Air Sinclair Lewis
The Library of Work and Play: Mechanics, Indoors and Out Fred T. Hodgson

made or incorporated as an integral part: a built-in cupboard, a built-in escape clause
essential; inherent
(Austral) a built-in cupboard or wardrobe


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  • Built-up-mast

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  • Built-up-roof

    a usually flat or slightly sloped roof that is covered with a special material applied in sealed, waterproof layers.

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