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

4.5 out of 5

4 ratings in Australia

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Ratings History

Reviews

Best available!

Internauticus on

I collect all sorts of dictionaries, and I use them in my day-to-day research work. This implementation of the AHD beats the others by far as a first recourse, despite its being American and despite its not being the SOED (which may have the edge in historical content). Lovers of our language will revel in the two unique appendixes, linked from the main dictionary and fully explained in this app as in the print version, with their Indo-European and Semitic roots. My only suggestion: link from these appendices back to the main dictionary, please. That would be a wonderful enhancement to a superb reference resource.

Mr

Adel A on

It's not waste of money .. I paid more bucks for Oxford which I don't use anymore after getting this great dictionary.

Would be up the top if you could turn the audio up more!!

agent86therealone on

Please make the audio louder. It is barely audible on speakerphone even with the volume turned all the way up. I can only give it 3 stars because of the lack of audio controls but will give it 5 if you can fix this. Speaking Dictionary is only $1.19 and the audio is very nice and loud. I bought this mainly for the audio and it is very expensive but needs tweaks with the audio to make it louder on speakerphone. I use speakerphone to help my wife with her English so earphone is not really an option for us. The speakers have very excellent pronunciation but just needs to be louder so could you kindly look into this in a coming update please as it is very important to me and if Speaking Dictionary can do it then I can't see why American Heritage can't.

Annoying unnecessary red badge on icon

Rik Kangaroo on

For some bizzare reason, the developers have fixed a red circular "2" badge to the icon, normally used in other applications to indicate 2 items require your attention. Here, it means nothing more than you have release 2 of the dictionary. Each time you glance at your screen you'll see it, and wonder what idiot is responsible.

Worth Every Cent

artistjoh on

This is the standout dictionary on the iPhone. Unlike others which tend to be just print dictionary's ported to an app this one takes full advantage of being an iPhone app. My favorite feature is the audio pronunciation of every word, especially important because this dictionary is encyclopedic and includes large numbers of words from all over the world. The apps store description does not convey just how encyclopedic this dictionary really is. It is brilliantly comprehensive and includes abbreviations, acronyms, scientific, computer, geographic, biographic names and words and much, much, more. It is a sensational dictionary - who would have thought that I would discover that an iPhone app dictionary is better than my print two volume Websters? British spellings are included as well as American spellings, thus you find harbour as well as harbor, so the dictionary is perfectly useful for all English speakers. As the app is the largest in the app store it pays to take some precautions while installing for trouble-free installation. (1) On your iPhone go to settings>General>Auto-Lock and temporarily set it to "never" so that itdoes not disturb a long installation (2) Reboot the iPhone by holding the on/off button until the red power off button appears. Shut the phone down and let it rest for a minute or so then restart. (3) Sync the iPhone in iTunes. It takes a while as the dictionary is over 300MB (4) Reboot the iPhone again by shutting down and letting it rest for a minute or two before restarting. This cold restart should eliminate any potential problems. Incidentally this procedure is beneficial for installing all large apps. Despite the large size of the app it works brilliantly, it loads fast, all links work very fast. Other developers could learn a thing or two from this one. It is smooth and a pleasure to use.

Very comprehensive

aclaires on

I was inititally worried about this app, as the size of it, back in August, caused me to need to reset my phone. I waited a few weeks before reinstalling and have had no further problems (make sure you do all the sensible things like setting your phone not to go to sleep before installing). It is expensive, but it is extremely comprehensive and very easy to use, it also includes pronunciation. I would like the "Search" entry space to come up clear every time, rather than having to backspace delete the previous word, but that's pretty petty, given the overall ease of use, and the content. Under the "About" button (which seems the wrong place, as that's often just developer notes) there are really excellent articles on things such as change in the English language, as well as lists of Indo-European roots. It's obviously the most expensive app by far that I've bought... but I love dictionaries, and this is an excellent one, even though it's American!

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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 weeks ago