Dictionary.com is an online dictionary whose domain was first registered on May 14, 1995.[1] The company was founded by Brian Kariger and Daniel Fierro as part of Lexico Publishing, which also started Thesaurus.com and Reference.com.[2]

Dictionary.com logo.svg
Type of site
Available inEnglish
OwnerRock Holdings
Created byBrian Kariger
Daniel Fierro
LaunchedMay 14, 1995; 24 years ago (1995-05-14)

In July 2008, Lexico Publishing Group, LLC, was acquired by Ask.com, an IAC company,[3] and renamed Dictionary.com, LLC.[4] In 2018, IAC sold Dictionary.com and Thesaurus.com to Rock Holdings.[5]


The content for Dictionary.com is based on the latest version of Random House Unabridged Dictionary, with other content from the Collins English Dictionary, American Heritage Dictionary and others.[6]

Features and appsEdit

On Monday, May 3, 1999, Dictionary.com began its Word of the Day feature.[7]

In 2010, Dictionary.com began its annual Word of the Year feature with the word 'change'.[8] The selection is based on search trends on the site throughout the year and the news events that drive them. [9]

The following is the list of Dictionary.com's annual words starting in 2010:[8]

In April 2009, Dictionary.com offered their first dictionary app in the iOS App Store. Since then, they have released an Android version, as well as a standalone thesaurus app called Thesaurus Rex, along with education apps, Dictionary.com Flashcards, Word Dynamo, and Learning to Read with Zoo Animals.


  1. ^ Dictionary.com WHOIS, DNS, & Domain Info - DomainTools page at DomainTools.com. Retrieved June 16, 2016.
  2. ^ "Lexico, Dictionary.com Being Acquired By Ask.com; Price In $100 Million Range". Gigacom. Retrieved 2014-01-24.
  3. ^ Auchard, Eric (July 4, 2008). "Ask.com closes acquisition of Dictionary.com". Reuters. Retrieved October 14, 2019.
  4. ^ "Amended and Restated Operating Agreement of Dictionary.com, LLC". U.S. Securities and Exchange Commission. July 17, 2008. Retrieved October 14, 2019.
  5. ^ Reindl, J. C. "Dan Gilbert just dipped into the online dictionary, thesaurus business". Detroit Free Press. Retrieved 2019-08-06.
  6. ^ "Dictionary.com - About Us". Retrieved October 8, 2015.
  7. ^ "emolument - Word of The Day".
  8. ^ a b "What Dictionary.com's words of the year say about us". cnn. Retrieved December 19, 2019.
  9. ^ ""Existential' crowned word of the year by Dictionary.com". Click on Detroit. Retrieved December 19, 2019.
  10. ^ ""Existential' is Dictionary.com's Word Of the Year". CBS News. Retrieved December 19, 2019.

External linksEdit