This second edition of The Cambridge Encyclopedia of Language presents a mass of new information and introduces the subject of language to a fresh generation of students and general readers. The first edition of the book is probably the most successful general study of language ever published. This second edition extends the range of coverage to include advances in areas like machine translation, speech interaction with machines, and language teaching. There is new material on acoustics, physiological concepts of language, and World English, and a complete update of the language distribution maps, language-speaking statistics, a table of the world's languages, and further reading. All geopolitical material has been revised to take account of boundary changes. The book has been redesigned and is presented for the first time in full colour, with new pictures and maps added.