Merriam-Webster Unabridged

America’s largest, most comprehensive dictionary reinvented for today’s students, teachers and librarians.

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The most authoritative source of information on the English language.

America’s largest, most comprehensive dictionary is reinvented for today’s librarian, teacher, and student. With up-to-date information, definitions, usage notes, a modern layout, and other exciting features, Merriam-Webster Unabridged is the most authoritative source of information on the English language.

Special features

Comprehensive vocabulary

Extensive and trustworthy entries include more than 700,000 definitions, 502,000 words, 158,500 etymologies and 123,500 quotations from well-known writers.

Advanced search

An advanced search tool offers exclusive access to recently collected citations from the Merriam-Webster citation files.

Full subjects coverage

A variety of categories are represented, including Food & Beverage, Health & Medicine, Internet, Law, Music and Science.

Bonus features

“Ask the Editor” videos, a blog, Top 10 Lists, Word of the Day, vocabulary quizzes and Most Popular—the most frequently looked-up words on a daily and weekly basis—offer significant value beyond that of a dictionary.

Engaging insights

A Thing About Words: The Blog offers weekly insight and observations about language from Merriam-Webster’s editors.

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