Thomson Reuters Releases 12th Edition of Black’s Law Dictionary

Features 2,500 new terms, including definitions of more than 70,000 law-related words and phrases, plus scholarly and judicial quotations on legal terminology

TORONTO, June 5, 2024 – Thomson Reuters (TSX/NYSE: TRI), a global content and technology company, today announced the release of Black’s Law Dictionary, 12th Edition. It features 2,500 new terms, including definitions of more than 70,000 law-related words and phrases, plus over 5,000 scholarly and judicial quotations on legal terminology.

Every page in the 12th edition of this iconic dictionary has been supplemented and revised. Among the new terms in this edition are deepfake, ghost gun, make-my-day statute, and shadow docket. The greatly expanded 12th edition is the most comprehensive English-language law dictionary ever compiled.

Chief Editor Bryan A. Garner, long regarded as the world's leading legal lexicographer, has been at the helm of Black’s Law Dictionary since the 7th edition was published in 1999.

“There’s good reason why Black’s is the dictionary of record in American law and renowned worldwide: it’s the most extensive, accurate, clearly drafted, and authoritative dictionary ever written for the legal profession and for anyone else needing legal definitions,” Garner said. “When you use Black’s, you’re using the most trusted and respected resource.”

Under Garner’s chief editorship, expert editors and contributors have captured the most current legal terminology and definitions.

“Thomson Reuters is proud to publish the most widely cited law book in the world and to help foster a common understanding of the growing language of the law,” said Jennifer Prescott, president, Global Print, Thomson Reuters. “Black’s is cited by judges and lawyers more than any other legal reference book, making it a must-have for judges, lawyers, legal professionals, and law students.”

To learn more about Black’s Law Dictionary, click here.

Thomson Reuters 
Thomson Reuters is a leading provider of business information services. Our products include highly specialized information-enabled software and tools for legal, tax, accounting, and compliance professionals combined with the world’s most global news service – Reuters. For more information on Thomson Reuters, visit and for the latest world news,

Bryan A. Garner 
Bryan A. Garner, editor of the past six editions of Black’s Law Dictionary, is the award-winning author of more than 25 books. He writes on jurisprudence, lexicography, grammar, advocacy, and legal drafting. At SMU Dedman School of Law, where he has taught since 1990, he holds the title Distinguished Research Professor of Law. For Thomson Reuters, he has co-authored two books with Justice Antonin Scalia, Making Your Case: The Art of Persuading Judges (2008) and Reading Law: The Interpretation of Legal Texts (2012). For more information, go to

Jeff McCoy