convectional, a.
(kənˈvɛkʃənəl)
[f. convection + -al.]
Of, pertaining to, or induced by convection; spec. of rain, resulting from the condensation of moisture as warm air rises and cools.
| 1892 Nation (N.Y.) 1 Sept. 166 He concludes that the convectional origin of summer thunder-storms implies a like origin for such storms in winter. 1904 U.S. Monthly Weather Rev. Feb. 77 (Cent. D. Suppl.), The convectional currents. 1927 Kendrew Clim. Continents (ed. 2) 223 The ground is heated by the strong sunshine, and convectional overturnings take place between the layers of air resting on it and those above. 1930 Meteorol. Gloss. (H.M.S.O.) (ed. 2) 46 Convectional rain, caused by the heating of the surface layers of the atmosphere which expand and rise, giving place to denser cool air. 1957 K. A. Wittfogel Oriental Despotism 24 On-the-spot rains create additional dangers when they are overconcentrated (convectional) or irregular. |