American Heritage Dictionary 518.0 - App Store

The Fifth Edition of The American Heritage(R) Dictionary of the English Language is one of the most comprehensive and accessible resources available on any mobile device.

This latest edition has been much anticipated:
10 years
20 Lexicographers
200 Usage Experts
10,000 New Words and Senses

1 Defining Achievement

Keep the hardcopy at home and take the app out with you wherever you need it.

Main Features:
● the entire text of this landmark new edition
● complete front matter and appendices
● real-time progressive searching
● three-way cross-referencing indexes
● wildcard pattern searches (with * ?)
● online search support for rare words and slang
● spelling suggestions
● internal hyperlinking
● zoomable graphics
● full pronunciation symbols chart
● IPA pronunciation symbol conversion
● detailed etymologies with links to root appendices
● professionally recorded sound files
● automatic search history
● fallback online search for esoteric or archaic words and the latest slang
● AI boosted anagram generator
● two-way external application interaction
● bookmarks with editable notations
● make-your-own flashcards
● "Word-a-day" feature with TOEIC(R) & TOEFL(R) lists
● "Share" extension​ to search inside other apps -with "store for later"
● "Today" and LockScreen widgets
● 3D Touch support
● DarkMode support
● iPad Pro multi-screen and Drag & Drop
● Dyslexic mode and VoiceOver support
● iOS12 to iOS27 support
● iPhone 18 support
● iPhone, iPod, iPad and macOS support

In keeping with the American Heritage(R) tradition of cutting-edge research, the Fifth Edition represents the work of a dedicated team of experts, scholars, and contributors. Thousands of definitions have been revised in rapidly changing fields such as astronomy and biology, geographical entries and maps have been completely updated, and the dictionary’s signature feature notes on word history, synonymy, and language variation have been enhanced and improved.

Word meanings are made easier to understand with thousands of new quotations from classic and contemporary writers. Etymologies explaining word origins and development have been newly created or revised to reflect the very latest scholarship. Many words are traced back to their roots in prehistory through two unique appendices showing word roots in ancient Indo-European and Semitic.

Reliable, enlightening, and visually stunning, the Fifth Edition of The American Heritage(R) Dictionary of the English Language gives you the opportunity to make your mark in the best possible way.

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The American Heritage(R) Dictionary of the English Language, Fifth Edition published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
http://www.hmhco.com

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Powered by Enfour's "UniDict(R) Engine 18"
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● This is "free-to-download" but not a free app. It requires an InApp purchase.

Version History Updated Siri support and added Apple Intelligence support (eg. offline AI Teacher on devices that support it)
Fixed an issue with the Bookmarks menu in iOS27. 18.0 2d ago Adds a monthly subscription option. 17.1 Aug 28 Updates Bookmark sync and backup.
Add support for Anki. 17.0 Jul 14 Improved iOS26 support 16.2 Mar 12 Better support for iOS26 16.1 Feb 24 A fix for search on conjugations. 16.0.1 09/22/2025 Keeping up to date 16.0 09/09/2025 Updates to Flashcards and Study Memo.
Changes to "Save Search Word" off behaviour.
Adds launch via Siri. 15.3 03/18/2024 Now add up to 3 Words-of-the-Day.
Add import and restore of Bookmarks from iCloud Drive. 15.1 02/16/2024 Adds an AI boosted anagram generator.
Adds a LockScreen Widget.
iOS17 support. 15.0 11/10/2023 Fixes for Flashcards and Lightning cards 14.7 08/06/2023 Fix for Bookmark folders 14.6 07/20/2023 Adds a Lightning Cards feature that lets you study just a few words in any spare minutes 14.5 06/26/2023 Adds new third-party dictionary links.
Adds a "Open to Search" setting to iPads.
Changes the way it works on iPhones.
Complete update to localizations.
Fixes for Bookmarks. 14.1 03/12/2023 Major update to Bookmarks and History.
• iCloud Sync now works no matter how many bookmarks you have.
• Backups are made locally for all bookmark changes.
• Automatic weekly bookmark backup setting has been added.
• You can also use your bookmarks in the "Today" widget or "Word of the Day".
• You can now bulk save your search History to Bookmarks. 14.0.1 02/21/2023 Major update to Bookmarks and History.
• iCloud Sync now works no matter how many bookmarks you have.
• Backups are made locally for all bookmark changes.
• Automatic weekly bookmark backup setting has been added.
• You can also use your bookmarks in the "Today" widget or "Word of the Day".
• You can now bulk save your search History to Bookmarks. 14.0 02/19/2023 Security update 13.3.2 01/16/2023 Fix for printing in iOS16 13.3.1 12/23/2022 Fixes for iOS 16.
Clipboard fix.
Link Menu fix. 13.3 10/06/2022 Pinching in and out for zooming for definition pages returns.
Optimised pronunciation sounds - shaves 200MB off app size. 13.2 03/14/2022 UI improvements.
Better iCloud syncing.
Adds a selectable interface for Bookmark restores.
Adds a setting for third-party keyboards.
Fixes for DarkMode. 13.1 01/24/2022 UI & graphics updated.
Bookmarks are now automatically restored after the app is deleted and reinstalled. (Turn on iCloud Sync setting for this)
Manual Bookmark iCloud restore is now smarter. 13.0 12/21/2021 InApp Purchase fix 12.1.5 12/09/2021 InApp Purchase fix 12.1.4 12/08/2021 Interface improvements. 12.1.3 12/02/2021