based on the Second Edition of the Random House Dictionary of the English Language. Versions of the dictionary have been published under other names, including Webster's New Universal Dictionary (which was previously the name of an entirely different dictionary), Webster's Encyclopedic Unabridged Dictionary, and Webster's Encyclopedic Unabridged Dictionary of the English Language. Dictionary.com's online dictionary bases its proprietary content on the Random House unabridged version. See also WordGenius References External links Finding aid to the Random House dictionary records at Columbia University. Rare Book & Manuscript Library. 1966 non-fiction books English dictionaries Random House books