Breadcrumb Home > Dictionary > Index A amplifier: Meaning and Definition of Find definitions for: am•pli•fi•er Pronunciation: (am'plu-fī"ur), [key] — n. a person or thing that amplifies or enlarges. an electronic component or circuit for amplifying power, current, or voltage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: amplifier (Thesaurus) amplificatory amplify TrendingHere are the facts and trivia that people are buzzing about. Animal Group Terminology Largest Countries in the World (by Area) Current Events This Week: January 2023 State Abbreviations Dinosaur Fossils (By U.S. State!) The Chinese Zodiac ✖ Related Content Daily Word Quiz: locution Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language