adapter

or a·dap·tor

[ uh-dap-ter ]

noun

1. a person or thing that adapts.
2. 1. a connector for joining parts or devices having different sizes, designs, etc., enabling them to be fitted or to work together.
   2. Also called plug adapter,. a device that connects an electrical plug to an outlet that has a different plug shape:

      Last time I traveled, I brought the wrong adapter.

   3. Also called AC adapter,. a device with a cord that plugs into an electrical outlet and functions as an external power supply for a small or portable electronic device, usually converting AC current to DC:

      I forgot to plug in the adapter, and my laptop died.

3. an accessory to convert a machine, tool, or part to a new or modified use.
4. Computers.
   1. expansion card.
   2. an external device containing the necessary circuitry to connect to or work with another device or system:

      a network adapter;

      a wireless adapter;

      a video adapter.

Other Words From

• non·a·dapt·er non·a·dap·tor noun

Word History and Origins

Origin of adapter¹

First recorded in 1795–1805; adapt + -er ¹

Example Sentences

For one, the USB-powered device does not come with an AC adapter, so expect an additional purchase if you don’t have one lying around.

From Los Angeles Times

USB sockets are a relative rarity, especially in older accommodations, and chances are slim the hotel will have an adapter to lend you.

From Los Angeles Times

When Jeremy Strong, named best actor for “An Enemy of the People,” addressed the show’s director, Sam Gold, and adapter, Amy Herzog, in his acceptance speech, it took ages for a camera to show them.

From New York Times

Teslas or any vehicle made with the “North American Charging Standard” head will need an adapter, which is often included with the EV.

From Seattle Times

Not telling the audience how to feel is one thing, but it’s unclear if the author or adapter felt much about it themselves.

From Seattle Times

Related Words

• connection