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Black's Law Dictionary

The most widely cited law book in the world, the new 10th edition of Black's Law Dictionary is a must-have for legal bookshelves.

Black's Law Dictionary, 10th edition now available

The 10th edition contains:

  • More than 50,000 legal terms
  • More than 7,500 new terms added
  • Twice as many sources quoted and cited as the 9th edition
Buy the hardbound 10th edition

Now Available: Black's Law Dictionary, Pocket Edition, 5th

The 5th edition contains:

  • More than 13,000 terms and 19,000 definitions
  • Definitions from Black's 10th, the most-cited law dictionary
  • One compact and easy-to-use volume
Buy the portable 5th edition

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Black's Law Dictionary app

Access more than 50,000 legal definitions online or offline with the Black's Law Dictionary, 10th mobile app.

Buy Black's Law Dictionary, 10th (iOS)

Newswatch: Black's Law Dictionary app review

Watch the Discovery Channel's Newswatch review of the Black's Law Dictionary app for iOS devices.

History of Black's Law Dictionary

  • Founded by Henry Campbell Black
  • First edition published in 1891 by West Publishing Company
  • In 1990, the Centennial Edition prefaced the first mention of online legal search through Westlaw
  • In 1999, Bryan A. Garner became editor in chief of the seventh edition, marking dramatic updates to prior work