/ Dictionary / Index A adapter: Meaning and Definition of Find definitions for: a•dapt•er Pronunciation: (u-dap'tur), [key] — n. a person or thing that adapts. a connector for joining parts or devices having different sizes, designs, etc., enabling them to be fitted or to work together. an accessory to convert a machine, tool, or part to a new or modified use. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: adapter (Thesaurus) adaptation adaptive Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language