— convectional , adj.
/keuhn vek"sheuhn/ , n.
1. Physics. the transfer of heat by the circulation or movement of the heated parts of a liquid or gas.
2. Meteorol. the vertical transport of atmospheric properties, esp. upward (distinguished from advection ).
3. the act of conveying or transmitting.
[ 1615-25; convection- (s. of convectio ) a bringing together. See CONVECT, -ION ]