On this day in 1884, the first portion of what is known to be the most comprehensive and accurate dictionary was published, the Oxford English Dictionary. The Oxford English Dictionary otherwise known as OED took 40 years to create. After the first portion was created it contained a total of 400,000 words and phrases. The OED then continued to add more volumes and renditions.
What makes the OED unique is that it features cross-references, etymologies, and even provides a chronological history for each word or phrase. In 1992 the OED would become available on CD-ROM, making it much more easier for users to search and find different words. In order to create the online version it took 120 people to type all the information from the book version and 50 proofreaders. As of today the Oxford English Dictionary now contains over 59 million words!