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

tooltip

noun
 
/ˈtuːltɪp/
 
/ˈtuːltɪp/
(computing)
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  1. a message that appears when you move a cursor over an image, a symbol, a link, etc. on a computer screen
    • Moving your mouse over an icon displays a tooltip explaining its function.
aspiration
noun
 
 
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