Definition of antigravity noun from the Oxford Advanced American Dictionary

 

antigravity

 noun
noun
NAmE//ˌæntiˈɡrævət̮i//
 
, NAmE//ˌæntaɪ‑//
 
[uncountable](physics)
 
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an imaginary force that works against gravity
See the Oxford Advanced Learner's Dictionary entry: antigravity