With more than 900,000 human-edited definitions, Acronym Finder is the world's largest and most comprehensive dictionary of acronyms, abbreviations, and initialisms. Combined with the Acronym Attic, Acronym Finder contains more than 4 million acronyms and abbreviations. You can also search for more than 850,000 US and Canadian postal codes. Also offers an interface to submit new acronyms for addition to the database.