adapter

noun

adapt·​er ə-ˈdap-tər How to pronounce adapter (audio)
a-
variants or less commonly adaptor
Synonyms of adapternext
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

Synonyms of adapter

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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
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.
Because beamforming reports are broadcast back to the access point in the clear, a Wi-Fi adapter within range can passively record them in monitor mode. — New Atlas, 26 Aug. 2026 Technicians loaded the observatory with 290 gallons (1,100 liters) of hydrazine fuel on July 25, then attached it to its payload adapter in early August. — Josh Dinner, Space.com, 24 Aug. 2026 With its 25-watt speed, this adapter can charge modern smartphones from 0 percent to 50 percent in roughly 30 minutes. — Annita Katee, Travel + Leisure, 22 Aug. 2026 Priced at $549, the 2026 Polymega will include the console itself, one of Polymega’s second generation universal wireless controllers, a power adapter, an HDMI cable, a dust cover, plus a 1-year limited warranty. — Mitch Wallace, Forbes.com, 18 Aug. 2026 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

Rhymes for adapter

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Browse Nearby Words

adapted
adapter
adaption
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Cite this Entry

“Adapter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/adapter. Accessed 1 Sep. 2026.

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Kids Definition

adapter

noun
adapt·​er
variants also adaptor
ə-ˈdap-tər How to pronounce adapter (audio)
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
ə-ˈdap-tər How to pronounce adapter (audio)
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
Last Updated: - Updated example sentences
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