The Concise Oxford English Dictionary is the most popular dictionary of its kind around the world and is noted for its clear, concise definitions as well as its comprehensive and authoritative coverage of the vocabulary of the English-speaking world.

Authoritative and up to date, this eleventh edition of the Concise Oxford English Dictionary contains over 240,000 words, phrases, and definitions, including 900 new words. It offers rich vocabulary coverage, with full treatment of World English, rare, historical, and archaic terms, as well as scientific and technical vocabulary, and provides hundreds of helpful notes on grammar and usage.