plug-in

[pluhg-in]

adjective

1. capable of or designed for being connected to an electrical power source by plugging in or inserting: a plug-in transistor.

   a plug-in hair dryer;

   a plug-in transistor.

noun

1. plug.

2. jack.

3. a plug-in appliance.

4. Computers.,  a small software program that builds additional functionality into a stand-alone computer application.

   Your web browser can’t display this video without a plug-in.

plug in

verb

1. (tr, adverb) to connect (an electrical appliance) with a power source by means of an electrical plug

noun

1. a device that can be connected by means of a plug

2. computing a module or piece of software that can be added to a system to provide extra functions or features, esp software that enhances the capabilities of a web browser

3. computing ( as modifier )

   plug-in memory cards

plug-in

1. An accessory software or hardware package that is used in conjunction with an existing application or device to extend its capabilities or provide additional functions.

Word History and Origins

Origin of plug-in¹

First recorded in 1920–25; adjective and noun use of verb phrase plug in

Related Words

• factor 
• ingredient 
• item 
• peripheral 
• piece 
• segment 
• unit