Definition of vaporware noun from the Oxford Advanced American Dictionary

 

vaporware

 noun
(vapourware)noun
NAmE//ˈveɪpərˌwɛr//
 
[uncountable](computing)
 
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a piece of software or other computer product that has been advertised but is not available to buy yet, either because it is only an idea or because it is still being written or designed