American Heritage® Dictionary
4th Edition (AHD4) - UniDict®
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Description

*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.

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"In the battle of the Big Three dictionaries, American Heritage® stands out on iPhone" (4 mice)
— MacWorld
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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

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The American Heritage® Dictionary of the English Language, Fourth Edition published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
http://www.hmco.com

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Powered by Enfour's "UniDict® Engine 15"

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"Companion Synonyms"
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User Rating

4.68 out of 5

164 ratings in United States

5 star
134
4 star
21
3 star
2
2 star
1
1 star
6

Ratings History

Reviews

Loved

0907iii on

I’m thanking you .

Stopped working

portales on

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.

Awesome dictionary.

RtfFan on

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!

This app is broke again

BassaBoy on

Not working on iPad Pro 11” (2020). When you open the app, you get a flash screen that says “total failure” before sending you to the App Store. Please fix.

AHD

JMIT45 on

Very useful

A Great App!

KinoBruin on

I remember paying for this dictionary a couple of years ago and am so happy that it’s being updated to work with newer iOS updates. Thank You to the developers and the software company! If you need a dictionary, this app is a great choice. Believe me, I’ve tried most of them.

Great Word Tool

Phil the Pil on

A dictionary is always good to have by your side. Even at this time. The syllables allow a person to know how to pronounce a word and the definitions are thorough and up to date. Great tool!

I am very grateful this is still supported.

scegf0d on

Bought this app a decade ago. Still works. Perhaps a better interface and faster then newer dictionary apps. Very impressed.

American Heritage Dictionary

dickjonesis10 on

I bought this dictionary in 2010 and used it almost daily until I updated it a few days ago. It now won’t let me into the app, popping me right back to the menu.

Love this Dictionary

Soljie on

Back then this was the most expensive thing i bought on the iPhone , i think it was $30 and 9 or ten years ago was a lot of money . I remember it took me a long time to download because i was downloading it over 3g and it was a lot of MBs and 3g was slow back then . Thanks for keep updating this classic .

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App Info

Category
Reference
Publisher
Enfour, Inc.
Languages
Portuguese, German, Burmese, Bosnian, Central Khmer, Catalan, Czech, Chinese, Korean, Croatian, Kurdish, Danish, Slovene, Spanish, Esperanto, Finnish, French, Greek (modern), Hebrew (modern), Hindi, Dutch, Hungarian, Indonesian, English, Irish, Icelandic, Italian, Japanese, Lithuanian, Macedonian, Malay, Mongolian, pc, Norwegian Bokmål, Persian, Polish, Romanian, Russian, Swedish, Swahili, Tagalog, Thai, Turkish, Ukrainian, Vietnamese, Arabic
Recent version
15.5 (1 month ago )
Released on
Feb 2, 2019 (5 years ago )
Last updated
4 days ago