HarperCollins Publishers LLC is one of the world’s largest publishing companies and is part of the “Big Five” English-language publishing companies, alongside Hachette, Holtzbrinck/Macmillan, Penguin Random House, and Simon & Schuster. The company is headquartered in New York City and is a subsidiary of News Corp. The company name is a combination of several publishing firm names: Harper & Row, an American publishing company acquired in 1987, whose own name was the result of an earlier merger of Harper & Brothers (founded 1817) and Row, Peterson & Company; together with UK publishing company William Collins, Sons (founded 1819), acquired in 1990. It had published several famous dictionaries, such asCollins COBUILD Dictionary,Collins Student’s Dictionary,Collins Easy Learning Grammar and Punctuationand so on.

The 9th edition of the Collins COBUILD Advanced Learner’s Dictionary has been revised and updated to include detailed coverage of today’s English in a clear, attractive format.

Ideal for upper intermediate and advanced learners of English, this dictionary covers all the words, phrases and idioms that students need to master in order to speak and write

effective English. Thousands of updated examples taken from the 4.5- billion word Collins Corpus, show learners how the words are used in authentic contexts. The dictionary offers extensive help with grammar through the inclusion of grammar patterns at examples, plus a new supplement to help with academic and business grammar.

Additional information is provided throughout to help learners improve their knowledge of collocation, etymology and synonymy. Informative and relevant vocabulary panels show

how words are used in a range of everyday contexts.

In addition, this dictionary offers learners guidance on how to communicate effectively in English. The Language in Use supplement provides a wealth of invaluable information on how to write and speak English for different purposes using the appropriate language, style, and tone. Resources and activities to help learners make the most of the dictionary are available for free online.

The Collins COBUILD Advanced Learner’s Dictionary provides invaluable and detailed guidance on the English language, and is the complete reference tool for learners of English.