adapter

noun

adapt·​er ə-ˈdap-tər 

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

Synonyms

• accessory
• accessary
• accoutrement
• accouterment
• add-on
• adjunct
• appendage
• appliance
• attachment
• option

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

In Canada, dealerships there will offer the adapters later in the year in quarter 2. —Sasha Lekach, Forbes, 9 Jan. 2025

The adapters are available to purchase through dealerships. —Andrew J. Hawkins, The Verge, 9 Jan. 2025

Spotting rare birds or zebras on safari is no problem with these waterproof binoculars, complete with a tripod and phone adapter for just $63 (a 43-percent discount). —Brittany Vanderbill, Travel + Leisure, 14 Dec. 2024

With four different plug types, this adapter is compatible in over150 countries. —Merrell Readman, Travel + Leisure, 30 Dec. 2024

Word History

Etymology

adapt + -er entry 2

First Known Use

1753, in the meaning defined at sense 2

Kids Definition

adapter

noun

adapt·​er

variants also adaptor

ə-ˈdap-tər 

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 

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