A unique combination of dictionary and usage guide, this new book offers a complete one-stop reference on the English language. Both parts of the Guide are completely up to date and have been compiled using the resources of the Oxford Dictionaries Department, including a massive computer database of English in use which allows accurate and up to date tracking of current trends in usage and spelling. * Over 51,000 dictionary entries * 56,000 clear definitions * Pronunciations given for thousands of awkward words * Quick reference usage notes at relevant entries * Detailed 150 page guide to the rules of grammar, spelling, pronunciation, punctuation, meaning, and idioms This book is intended for for everyone who speaks and writes English.