Merriam-Webster is America's foremost publisher of language-related reference works. The company publishes a diverse array of print products. Dictionary making at Merriam-Webster has always been an ongoing process. Even as the 1859 edition was being published, editorial work on a completely new edition was under way. Best-selling, authoritative dictionary content from Merriam-Webster, America's leading and most distinguished language reference publisher.
Merriam-Webster Collegiate Dictionary, Eleventh Edition:

America's best-selling dictionary!

* Fully revised print edition featuring more than 225,000 definitions
* More than 10,000 new words and meanings
* Extended thesaurus
* American de-facto standard for dictionaries