ADVECTION

[ad.vec.tion] n [L advection-, advectio act of bringing, fr. advehere to carry to, fr. ad- + vehere to carry--more at way] (1910): the usu. horizontal movement of a mass of fluid (as air or an ocean current); also: transport (as of pollutants or plankton) by such movement -- ad.vect vt -- ad.vec.tive adj