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| a gadget; dingus; thingumbob. |
| a chattering or flighty, light-headed person. |
| convection (kənˈvɛkʃən) | |
| —n | |
| 1. | Compare conduction a process of heat transfer through a gas or liquid by bulk motion of hotter material into a cooler region |
| 2. | meteorol the process by which masses of relatively warm air are raised into the atmosphere, often cooling and forming clouds, with compensatory downward movements of cooler air |
| 3. | geology the slow circulation of subcrustal material, thought to be the mechanism by which tectonic plates are moved |
| [C19: from Late Latin convectiō a bringing together, from Latin convehere to bring together, gather, from vehere to bear, carry] | |
| con'vectional | |
| —adj | |
| con'vective | |
| —adj | |