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American Heritage® Dictionary

American Heritage® Dictionary

4th Edition (AHD4) - UniDict®

⭐️4.7 / 5
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All Versions of American Heritage® Dictionary


May 31, 2024

Adds an "AI Teacher" for deeper explanations or help for ESL students in 98 languages. Fixes for Bookmark syncing.


March 18, 2024

Updates to Flashcards and Study Memo. Changes to "Save Search Word" off behaviour. Adds launch via Siri.


February 16, 2024

Now add up to 3 Words-of-the-Day. Add import and restore of Bookmarks from iCloud Drive.


November 10, 2023

Adds an AI boosted anagram generator. Adds a LockScreen Widget. iOS17 support.


August 4, 2023

Fixes for Flashcards and Lightning cards


July 20, 2023

Fix for Bookmark folders


June 26, 2023

Adds a Lightning Cards feature that lets you study just a few words in any spare minutes


March 12, 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.


February 19, 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.


January 29, 2023

Major update to Bookmarks and History. Bulk save search History to Bookmarks. You can now use your Bookmarks in the "Today" widget or "Word of the Day".

American Heritage® Dictionary In-App Purchases History


Roget's II Thesaurus

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Price History of American Heritage® Dictionary

Description of American Heritage® Dictionary

*NOTE: there is a newer version of American Heritage® Dictionary available on the AppStore. Tap on the "Enfour, Inc." link for AHD5. The entire 2,074 page, 7.5 pound dictionary with its nearly 300,000 terms –plus 64 thousand recorded sound files by native speakers -all available instantly at your fingertips. ________________________________________ "In the battle of the Big Three dictionaries, American Heritage® stands out on iPhone" (4 mice) — MacWorld ________________________________________ More than 33,000 written examples, totaling 4,222,000 words, makes this largest mobile dictionary on ANY platform The indexes alone are larger than most brand-name dictionaries. Even without the sound files, AHD would still be the largest dictionary in the AppStore. Main Features: ● the entire text of this best selling book ● complete front matter and appendices ● three-way cross-referencing search ● real-time progressive look-up ● wildcard pattern searches (with * ?) ● spelling suggestion dictionary included ● internal hyperlinking & supports copy/paste ● pop-up pronunciation symbols chart ● IPA pronunciation symbol conversion ● etymology (word history) with root links ● professionally recorded sound files ● zoomable graphics ● fallback online search for esoteric or archaic words and the latest slang ● unique two-way external application interaction — first iPhone dictionary with external linking and now most advanced! ● bookmarks with editable notations ● automatic search history ● an "AI Teacher" for deeper explanations or help for ESL students in 98 languages ● AI boosted anagram generator ● "Today" & LockScreen widgets ● 3D Touch support ● DarkMode support ● Siri support ● iPad multi-screen and Drag & Drop ● iPhone 15 & iOS17 support ● iPhone, iPod, iPad and macOS support ● complete offline use - no Internet connection The renowned American Heritage® Usage Panel, a group of more than 200 distinguished writers, scholars, and scientists, offers advice on problems of grammar and style; engaging notes explain word histories and clarify differences among synonyms; thousands of quotations and example sentences show words in context; and elegant definitions are enhanced by numerous full-color photographs, drawings, and maps, making this one of the most complete reference tool available on any mobile platform. Reviews for the application: "As apps go, only Enfour’s American Heritage® Dictionary stands out for its graphic appeal and functionality. Although I was pleased to have so much lexical firepower in such a compact form, I was annoyed at how poorly the other dictionaries present on the platform." (4 mice) — MacWorld Editor's Choice. ranking = "Great" — MacLife Reviews of the print version: "The Best Dictionary...Designed to appeal to the eye as well as the mind, it is notable for its imaginative illustrations....This is a great family dictionary, and ideal for schoolrooms." — The Courier Journal "This dictionary, now in its fourth edition, makes it fun to look up definitions of words....This up-to-date and eminently useful dictionary features a fabulous full-color design that quickly and effectively guides users to the information they seek." — Library Journal ________________________________________ The American Heritage® Dictionary of the English Language, Fourth Edition published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. ________________________________________ Powered by Enfour's "UniDict® Engine 15" —thesaurus links work with these products: "Roget's II: New Thesaurus" "Companion Thesaurus" "Companion Synonyms" and many more
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American Heritage® Dictionary: FAQ

Is American Heritage® Dictionary iPad-friendly?

Yes, American Heritage® Dictionary supports iPad devices.
Enfour, Inc. is the developer of the app.
The American Heritage® Dictionary app currently supports iOS 12.0 or later.
The American Heritage® Dictionary app has a user rating of 4.7.
The App Genre Of American Heritage® Dictionary Is Reference.
15.5 is the newly released version of the American Heritage® Dictionary app.
The latest American Heritage® Dictionary update came out on July 23, 2024.
American Heritage® Dictionary launched on February 5, 2023.
Contains some mature themes or mild violence, recommended for ages 9 and up.
The American Heritage® Dictionary app is now available in American English, Arabic, Bosnian and 44 more.
Sorry, American Heritage® Dictionary is not available on Apple Arcade.
Absolutely! In-app purchases are accessible within American Heritage® Dictionary.
Unfortunately, American Heritage® Dictionary is not optimized for use with Apple Vision Pro.

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Reviews of American Heritage® Dictionary

  • Loved

    I’m thanking you .
  • Stopped working

    I do not want to update to the new version but the #4 sends me to your web page and no longer works. I use a dictionary everyday and have had to go to the web for my dictionary needs. Please fix version 4. Today, the best dictionary reigns again. Thank you for the update, now, all is calm, all is bright.

    Developer Response

    There were issues with Apple's licensing system. Please download the latest version (14.0). That fixes the issue. Go to AppStore > [your account] > "Update all" and it will download if you are on WiFi. Sorry for the inconvenience.
  • Awesome dictionary.

    An education in the English language. Great definitions, sometimes including useful pictures to illustrate the concept, and (as far as I’ve found) always having a button to give audio pronunciation of the word. Includes surprisingly useful background in how the dictionary is developed, history of the English language, and a comprehensive listing of Indo-European roots… that I didn’t realize would be useful to have til I’d been using this dictionary for a few years! NOTE - this version of the dictionary is MUCH better than the other one available as an app… I got confused and thought support for this version had been dropped and bought the other one… really a shadow of the value!

    Developer Response

    Thank you.