adapt·​er | \ ə-ˈdap-tər How to pronounce adapter (audio) , a- \
variants: or less commonly adaptor

Definition of adapter

1 : one that adapts
2a : a device for connecting two parts (as of different diameters) of an apparatus
b : an attachment for adapting apparatus for uses not originally intended

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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 To make the adapter compatible with the Windows update, download the latest software driver for it. Steve Alexander, Star Tribune, "File problems may not stem from Windows 10," 10 Aug. 2020 Wireless Adapter controller adapter for Nintendo Switch for $14.42 at Amazon (normally $20). Ars Staff, Ars Technica, "Apple’s AirPods and wireless charging case are down to a new low today," 4 Aug. 2020 On its side is a place to plug it into the wall adapter, as well as two USB ports (a standard USB and a USB-C) to connect your phone charger. Paige Szmodis, Popular Mechanics, "This UV-Light Sanitizer Will Keep Your Phone Germ-Free," 16 June 2020 Simply connect this tiny adapter (about two inches in length and width and one inch high) to your powered speakers or stereo receiver and press a button to pair with your bluetooth devices. Popular Science, "Bluetooth adapters for old-school audiophiles," 22 Oct. 2019 Gskyer astronomical refracting travel telescope ($95.99) with 70mm aperture, 400mm (f/5.7) focal length, phone adapter and wireless remote that lets beginners explore the stars and moon can be transported in its carry bag. oregonlive, "Amazon best sellers – what everyone is buying on sale for summer and maybe you should too," 5 July 2020 As far as ports, there’s a USB port for connecting external storage that contains picture and video files, an optical connector, an HDMI port, and the power adapter. Jason Cipriani, CNN Underscored, "Roku’s Smart Soundbar is an affordable jack of all trades," 2 July 2020 But the original batteries are wearing out, and NASA is in the process of replacing all 48 with 24 more powerful lithium-ion power packs and circuit-completing adapter plates to take the place of batteries that were removed but not replaced. William Harwood, CBS News, "Second spacewalk in a week continues work on space station batteries," 1 July 2020 By simply plugging electronic devices into this adapter before plugging it into the wall, users convert it to a smart device. Liv Birdsall, USA TODAY, "20 things from Best Buy that make aging in place easier," 25 June 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'adapter.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of adapter

1753, in the meaning defined at sense 2

History and Etymology for adapter

adapt + -er entry 2

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Learn More about adapter

Time Traveler for adapter

Time Traveler

The first known use of adapter was in 1753

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Statistics for adapter

Last Updated

14 Aug 2020

Cite this Entry

“Adapter.” Dictionary, Merriam-Webster, Accessed 14 Aug. 2020.

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More Definitions for adapter


How to pronounce adapter (audio)

English Language Learners Definition of adapter

: a device that is used to connect two pieces of equipment that were not designed to be connected


variants: also adaptor \ ə-​ˈdap-​tər How to pronounce adaptor (audio) \

Medical Definition of adapter

1 : one that adapts
2a : a device for connecting two parts (as of different diameters) of an apparatus
b : an attachment for adapting apparatus for uses not originally intended

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More from Merriam-Webster on adapter

Thesaurus: All synonyms and antonyms for adapter

Spanish Central: Translation of adapter

Nglish: Translation of adapter for Spanish Speakers

Britannica English: Translation of adapter for Arabic Speakers

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