American Dictionary

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The Essential American Heritage Dictionary (American Heritage Dictionary of the English Language) (English Edition)

OUP USA

New Oxford American Dictionary, Third Edition    

OXFORD UNIVERSITY PRESS

Oxford Collocations Dictionary - Second Edition: Oxford collocation dictionary. Con CD-ROM: A corpus-based dictionary with CD-ROM which shows the most ... combinations in British and American English.

Facsimile Publisher

An American dictionary of the English language: intended to exhibit, I. The origin, affinities and primary signification of English words, as far as they have been ascertained. II. The genuine orthography and pronunciation of words, according to general u Vol: 1 1828 [Hardcover]

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The American Heritage Dictionary: Fifth Edition  

Independently published

American Slang Dictionary: A Fun Guide to Modern American Expressions, Your Key to Understanding Today’s Lingo

Collins Cobuild

Collins COBUILD Advanced American English Dictionary

A dictionary of American authors                

MobiSystems, Inc.

Concise Oxford American Dictionary & Thesaurus  

MobiSystems, Inc.

New Oxford American Dictionary with Audio