WordNet® is a large lexical database of English with more than 1.4 million words, developed by the Cognitive Science Laboratory at Princeton University.
McGraw-Hill's American Idioms Dictionary shows you the ropes of English and helps you еxpand your English-speaking abilities with these 14,000-plus expressions, proverbs, and common sayings, listed alphabetically
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This dictionary defines the vocabulary students need to succeed in high school and beyond. It includes over 2,000 key vocabulary items vocabulary from math, the arts, chemistry, history, social studies etc. as well as the more general vocabulary .
The Cambridge Advanced Learner's Dictionary Third Edition provides definitions for about 170,000 words, phrases and examples and over 79,800 high-quality English audio recordings by Cambridge University Press.
The Cambridge dictionary offers up-to-date vocabulary,'mini-collocation' boxes and frequency information to highlight the most important words to learn.
It includes over 170,000 words, phrases and examples explained in clear and natural English .
The Cambridge Dictionary of American English provides up-to-date vocabulary, easy-to-understand definitions, helpful usage notes, and examples that show how English is really used.
It includes over 60,000 meanings and examples.
The best American English learner's dictionary is better than ever, with new words, audio pronunciations and new features. It includes over 60,000 meanings and examples.