The 2015 version of Webster's Dictionary, which was first published in 1864, is available online at Merriam-Webster.com. The online dictionary has a search function, allowing the user to enter a word and view its definitions. Synonyms and antonyms of the chosen word are also available.
Along with word definitions, the site provides examples of word usage, the etymology of the word and its first known use. The user may also search for phrases. A medical dictionary provides definitions of words or phrases used in a medical context. The site also has a Spanish section, allowing both English-to-Spanish and Spanish-to-English translation of words.