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The most popular online dictionary and thesaurus for learners of English

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Are you a website developer? Do you run a learning management system? Are you designing apps? Learners of English benefit from having a dictionary at their fingertips - on this page you'll find a selection of ways you can integrate Cambridge Dictionaries Online into your product.

Dictionary API

The Cambridge Dictionaries Online API gives you access to a range of dictionaries and methods. Explore our Developer Hub to find out more.

Double-Click Lookup

You can add the power of Cambridge Dictionaries Online to your own website, with a free double-click dictionary search feature for your website.

License Data

We also welcome enquiries from researchers and developers, and have a wide range of data sets available.

Search Widgets

Add these widgets to your website to let all your users look up any word they like from Cambridge Dictionaries Online.

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There, their and they’re – which one should you use?
There, their and they’re – which one should you use?
by ,
April 27, 2016
by Liz Walter If you are a learner of English and you are confused about the words there, their and they’re, let me reassure you: many, many people with English as their first language share your problem! You only have to take a look at the ‘comments’ sections on the website of, for example, a popular

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Word of the Day

planet

an extremely large, round mass of rock and metal, such as Earth, or of gas, such as Jupiter, that moves in a circular path around the sun or another star

Word of the Day

bio-banding noun
bio-banding noun
April 25, 2016
in sport, grouping children according to their physical maturity rather than their age ‘When we’re grouping children for sports, we do it by age groups, but the problem is that, within those age groups, we get huge variations in biological age,’ said Dr Sean Cumming, senior lecturer at the University of Bath’s department for

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