Longman Dictionary of American English 5 Cased (HE) -

The new edition of this best-selling dictionary helps intermediate students improve their writing with the new Collocations feature and offers extra support for those studying other subjects in English. The integrated Thesaurus helps students build their vocabulary. The online dictionary includes innovative functionality to facilitate customizable teaching and learning, and a wealth of customizable practice so that users focus on the words that they want to learn. Students preparing for SATs & TOEFL (R) can also practice their exam skills using the interactive exercises.