HOW TO USE THE DICTIONARY
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Some compound words (like bus rapid transit, dog whistle, or identity theft) don’t appear on the drop-down list when you type them in the search bar. For best results with compound words, place a quotation mark before the compound word in the search window.
THE USAGE PANEL
The Usage Panel is a group of nearly 200 prominent scholars, creative writers, journalists, diplomats, and others in occupations requiring mastery of language. Annual surveys have gauged the acceptability of particular usages and grammatical constructions.
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THE AMERICAN HERITAGE DICTIONARY BLOG
The articles in our blog examine new words, revised definitions, interesting images from the fifth edition, discussions of usage, and more.
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French physicist who won a 1929 Nobel Prize for proposing the theory that electrons and other particles exhibit wavelike properties, thus laying the foundation for the field of wave mechanics. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
