The Oxford Dictionary of English is at the forefront of language research, focusing on English as it is used today, informed by the most up-to-date evidence from the largest language research programme in the world, including the 800-million-word Oxford English Corpus. This revised edition includes hundreds of brand-new words and senses, as well as up-to-date encyclopedic information, and extensive appendices covering topics such as countries, heads of state, and chemical elements.