Merriam-Webster is America's most trusted online Dictionary for English words.

The dictionary by Merriam-Webster is America's most trusted online dictionary for English word definitions, meanings, and pronunciation. #wordsmatter.

America's most useful and respected dictionary, optimized for your Android device. This is the best Android app for English language reference, education,and much more...

Clear and simple definitions in basic American English from North America's leading language experts. More usage examples than any other dictionary.

Merriam-Webster, Inc., is an American company that publishes reference books and is especially known for its dictionaries.

In 1828, George and Charles Merriam founded the company as G & C Merriam Co. in Springfield, Massachusetts. In 1843, after Noah Webster died, the company bought the rights to An American Dictionary of the English Language from Webster's estate. All Merriam-Webster dictionaries trace their lineage to this source.

In 1964, Encyclopædia Britannica, Inc., acquired Merriam-Webster, Inc., as a subsidiary. The company adopted its current name in 1982.