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Online Dictionaries & Glossaries

Oxford Learner’s Dictionaries

American English and British English dictionaries. You can expand your vocabulary with convenient topic lists. They also offer a tool to check your comfortable reading level.

Cambridge Dictionary

Apart from an English dictionary, this website also offers translation dictionaries, quizzes, interesting blog articles and practical grammar explanations.


You can develop your vocabulary and writing skills further with the help of their writing tool, prompts and grammar and writing tips.


A graphical dictionary. If you enter a word, you get a diagram, which shows its meaning and associations with other words.

Nolo’s Free Dictionary of Law Terms and Legal Definitions (from B1)

A useful tool for law students looking to find plain-English definitions for legal terms.

MedTerms Medical Dictionary by MedicineNet.com (from B1)

Doctors define difficult medical language in easy-to-understand explanations of over 19,000 medical terms.

English for Psychology (from B1)

Alleydog is a glossary for American psychology students with explanations in plain English.

The Cavalcade o' Chemistry (from B1)

This website is particularly useful for biology and chemistry students – with explanations and worksheets.

More dictionaries

You can find more dictionaries on our website 'Onlinewörterbücher für mehrere Sprachen'.