convection

IPA: kʌnvˈɛkʃʌn

(obsolete) The process of conveying something.
(physics) The transmission of heat in a fluid by the circulation of currents.
(meteorology) The vertical movement of heat and moisture, especially by updrafts and downdrafts in an unstable air mass. The terms convection and thunderstorm are often used interchangeably, although thunderstorms are only one form of convection. Towering cumulus clouds are visible forms of convection.

Examples of "convection" in Sentences

"It's so hot that it makes a kind of fire weather called a convection column.
Bubbles of air will begin to rise if they are warmer than the surrounding air – this is known as convection.
Controlling convection is much more effective, in which case, a thin barrier of an inert gas such as CO2 works well.
The term convection is often used to describe heat transfer that ccurs between a object and a fluid flowing across it.
Sunspots are areas of intense magnetic power where thermal convection from the interior of the Sun has been inhibited.
-- Heat is transmitted through the air by what is called convection, that is, the particles of the air transmit it from one point to the next.
Atmospheric circulation involves thermo-gravitational convection, which is inherently instable and in rotating frame of reference generates hurricanes and tornadoes.
Place the cookie sheets in the freezer for, according to Martha, at least 15 minutes, until firm (I had an appointment so mine were in the freezer for 2 hours). 15 minutes before baking, preheat the oven to 350 F (325 F for convection, which is what I used).