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Definition of: convection
(kən·vek′shən) noun
1. The act of conveying.
2. Physics The diffusion of heat through a liquid or gas by motion of its parts: distinguished from conduction.
3. Meteorol. A thermal process whereby atmospheric circulation is maintained through the upward or downward transfer of air masses of different temperature. [<L convectus, pp. of convehere <com- together + vehere carry]
—con·vec′·tion·al adjective
—con·vec′tor noun
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