dictionaries

The World's most comprehensive free online dictionary, thesaurus, and encyclopedia with synonyms, definitions, idioms, abbreviations, and medical, financial, legal specialized dictionaries

Longman English Dictionary - the leading dictionary for learners of English of all levels: definitions, idioms, examples and more.

A Google alternative safe search engine for students offering information and reference sites: art, social sciences,social issues,social problems, history, biography, magazines, newspapers,encyclopedias,science, math, chemistry, biology, and dictionaries.

Purple Culture provides well selected English and multilingual publications on Chinese language studying, Chinese arts/culture/history, Chinese customs and social trends, with aims to help the world better understand China.