[con.vec.tion] n [LL convection-, convectio, fr. L convehere to bring together, fr. com- + vehere to carry--more at way] (ca. 1623) 1: the action or process of conveying
2. a: the circulatory motion that occurs in a fluid at a nonuniform temperature owing to the variation of its density and the action of gravity b: the transfer of heat by convection--compare conduction, radiation -- con.vec.tion.al adj -- con.vec.tive adj