Online dictionaries

General English

  • Cambridge Dictionaries Online Comprehensive dictionary of American and British English, phrasal verbs and idioms. English/English, French/English, Spanish/English, and more combinations.
  • Collins dictionaries An excellent online resource, containing an English, French, Spanish, German and Italian dictionary, as well as Thesaurus, Translator, Blog and other useful tools.
  • Oxford Dictionaries Extremely useful resource, containing English-to-English dictionary, Grammar, Blog, and Thesaurus (synonyms dictionary).
  • Wordreference A free bilingual dictionary with many language combinations, including English-Greek and vice versa.

Specialist English

  • Oxford Reference A collection of over 125 subjects and dictionaries, in one single database. This useful resource needs subscription, but you can occasionally find free definitions.
  • IATE Terminology for the European Union. Includes a great number of terms in the areas of finance, economics, business, science, industry, and others. English/Greek, Greek/English, and many other language combinations

English for Economics and Business

  • Cambridge Business Dictionary Along with regular terms, Cambridge Dictionaries Online offer explanations for economics and business-related terms. Just type the term you want and click on the “Business” tab at the results page.
  • Investopedia The site contains a great number of financial terms together with a detailed explanation of their meaning. English/English
  • The Economist Glossary of economic terms, topics and jargon

English for Information Technology and Computing