English vocabulary in use: elementary by 
English vocabulary in use: upper-intermediate by 
Test your English vocabulary in use: elementary by 
Test your English vocabulary in use: pre-intermediate & intermediate by Test your English vocabulary in use: upper-intermediate by 
Oxford basic English dictionary / Oxford University Press
Longman wordwise dictionary : for pre-intermediate - intermediate learners
Longman active study dictionary: for intermediate - upper-intermediate learners
Cambridge advanced learner's dictionaryA different English word every day. Click on the image for detailed explanations and audio pronunciations.
To find dictionary titles on the Libray Catalog, click the keyword subject headings below: