Merriam-Webster Unabridged

Get unlimited access to one of the world's largest, most comprehensive dictionary.

Merriam-Webster Unabridged is designed for today’s librarians, writers, editors, students, and professionals alike with the most up-to-date definitions, information, and other exciting features.

About Merriam-Webster Unabridged

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.

Features of
Merriam-Webster Unabridged

Words have power, and the way we use them matters. Merriam-Webster Unabridged gives you the tools to choose words with effectiveness and precision.

Get category-specific.

Access clear, expanded, authoratitative, up-to-date definitions, etymologies, synonyms, and usage notes.

Go beyond the dictionary.

Search the Merriam-Webster Collegiate Dictionary and Thesaurus as well as the Merriam-Webster Medical Dictionary for highly specific lexicon.

Experience the serendipity of discovery.

Use the Browse feature to look through dictionary entries in order, or use the advanced search function to find exactly what you’re looking for.

Learn More about Merriam-Webster Unabridged

Let's connect!

Talk with a representative to learn more about Merriam-Webster Unabridged.

Let us help you!

Find out how Expedition: Learn! can accelerate your students’ learning.

Let Britannica help build the right training plan for your staff.

Let us help you!

Find out how Expedition: Learn! can accelerate your students’ learning.

Expedition: Learn! Scope & Sequence

Click to expand

View the available lessons for elementary and middle school science and social studies

Expedition: Learn! Teacher Toolkits

Expedition: Learn! Reading Levels

Choose between 4 reading levels to meet the needs of every learner

Expedition: Learn! Spark Video

Each Expedition: Learn! Lesson begins with a video to spark students’ interest in the topic


Britannica Expedition: Learn!

Ignite the spark of curiosity and accelerate learning

You are reading a Middle School level article.

For Elementary or High School reading levels, please contact us.