adapter

noun

adapt·​er ə-ˈdap-tər How to pronounce adapter (audio)
a-
variants or less commonly adaptor
1
: one that adapts
2
a
: a device for connecting two parts (as of different diameters) of an apparatus
b
: an attachment for adapting apparatus for uses not originally intended

Examples of adapter in a Sentence

adapters for the food mixer include a meat grinder and an ice cream maker
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
What to look for in a quality USB to Ethernet adapter Ethernet adapter speed ratings One relatively common term, 10/100/1000, describes an Ethernet adapter that can accommodate 10, 100 or 1,000 megabits of bandwidth. Bestreviews, Mercury News, 22 July 2025 The back of the device holds an HDMI port, a USB-A port for connecting local storage, an Ethernet port, a connector for the power adapter (non-USB), and a reset button. PC Magazine, 15 July 2025 Instead, snag this on-sale Kindle bundle that includes the 2024 Kindle, a fabric cover, and a power adapter (because no, your Kindle does not already come with one. Nena Farrell, Wired News, 11 July 2025 The dual power supply of the DC adapter and D-cell batteries makes sure that your cat will be fed even when the power goes out. Bestreviews, Chicago Tribune, 23 June 2025 See All Example Sentences for adapter

Word History

Etymology

adapt + -er entry 2

First Known Use

1753, in the meaning defined at sense 2

Time Traveler
The first known use of adapter was in 1753

Browse Nearby Words

Cite this Entry

“Adapter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/adapter. Accessed 29 Jul. 2025.

Kids Definition

adapter

noun
adapt·​er
variants also adaptor
1
: someone or something that adapts
2
a
: a device for connecting two parts (as of different diameters) of a usually larger device
b
: an attachment for adapting a device for uses not originally intended

Medical Definition

adapter

noun
adapt·​er
variants also adaptor
1
: one that adapts
2
a
: a device for connecting two parts (as of different diameters) of an apparatus
b
: an attachment for adapting apparatus for uses not originally intended

More from Merriam-Webster on adapter

Last Updated: - Updated example sentences
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