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

 

convection

 noun
noun
BrE BrE//kənˈvekʃn//
 
; NAmE NAmE//kənˈvekʃn//
 
[uncountable](specialist)
 
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the process in which heat moves through a gas or a liquid as the hotter part rises and the cooler, heavier part sinks convection currents Word Origin mid 19th cent.: from late Latin convectio(n-), from Latin convehere, from con- ‘together’ + vehere ‘carry’.
See the Oxford Advanced American Dictionary entry: convection

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