The Oxford American Dictionary and Thesaurus combines a full dictionary and a full thesaurus, offering users access to the power of words as never before. With 200,000 entries and definitions and more than 300,000 synonyms, this is the most wide-ranging resource available: a first-of-its-kind reference book that's much more than a dictionary and thesaurus under one cover. Everything you'd find in a dictionary is here, along with everything you'd find in a thesaurus, all thoroughly integrated for ease of use. This edition includes a new 64-page Language Guide in the back of the dictionary that helps build power and confidence in vocabulary, spelling, grammar, and style. In addition to parts of speech, the Oxford American Dictionary and Thesaurus includes a wealth of valuable appendices featuring Selected Proverbs, Presidents of the U.S., Countries of the World, Terms for Animal Groups, Weights, Measures, Scientific Units, and Formulas, Chemical Elements and the Periodic Table, Musical Notation and the Orchestra, and much more. No American dictionary or thesaurus offers as much as the Oxford American Dictionary and Thesaurus. It not only combines an up-to-date and thoroughly reliable dictionary of American English with full thesaurus coverage and a usage guide, but it also provides a unique global perspective of English. All Oxford American dictionaries use an easy-to-use respelling system to show how entries are pronounced. It uses simple, familiar markings to represent common American English sounds.