|Parent company||Encyclopædia Britannica, Inc.|
|Founder||George Merriam, Charles Merriam|
|Country of origin||United States|
|Headquarters location||Springfield, Massachusetts|
|Publication types||Reference books, online dictionaries|
|Owner(s)||Encyclopædia Britannica, Inc.; Jacqui Safra|
In 1831, 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.