n 1  :  the circulatory motion that occurs in a fluid at a nonuniform temperature owing to the variation of its density and the action of gravity  2  :  the transfer of heat by convection in a fluid con*vec*tion*al adj con*vec*tive adj 
 
 
 
Similar sounding terms:  co·in·fec·tion  con·fec·tion 
 
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