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Definition of thumbnail noun from the Oxford Advanced Learner's Dictionary

thumbnail

noun
 
/ˈθʌmneɪl/
 
/ˈθʌmneɪl/
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  1. the nail on the thumb
  2. (also thumbnail image)
     (computing) a very small picture on a computer screen that shows you what a larger picture looks like, or what a page of a document will look like when you print it
See thumbnail in the Oxford Advanced American Dictionary
Check pronunciation: thumbnail

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buttercup
noun
 
 
From the Topic
Plants and trees
C2
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