Definition of convection
convectionalplay \kən-ˈvek-shnəl, -shə-nəl\ adjective
Recent Examples of convection from the Web
Most of the sun's energy warms the ground, which then gradually warms the air; the warm air rises, and cool air settles on the ground, creating a convection cycle of heating.
The gourmet kitchen boasts granite counters, a pot filler, double ovens with convection, a built-in refrigerator and a butler’s pantry.
Rising and sinking air currents develop in response, forming a vertical convection cell.
Researchers don’t fully understand how, but believe that liquid iron is in constant motion, both from the earth’s rotation and from convection currents, and that the motion generates electrical currents, which induce the geomagnetic field.
On Earth, that comes from the convection of molten iron in the outer core.
Convection — upward motion of air — helps produce thunderstorms.
Four new convection ovens have been purchased for the next phase of the work.
Elliott knew that this kind of geochemical information was previously believed to have been destroyed by early Earth melts and billions of years of subsequent mantle convection.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'convection'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
CONVECTION Defined for English Language Learners
Definition of convection for English Language Learners
: movement in a gas or liquid in which the warmer parts move up and the colder parts move down; also : the transfer of heat by this movement
CONVECTION Defined for Kids
Definition of convection for Students
: motion in a gas (as air) or a liquid in which the warmer portions rise and the colder portions sink Heat can be transferred by convection.
Medical Definition of convection
1: the circulatory motion that occurs in a fluid at a nonuniform temperature owing to the variation of its density and the action of gravity
2: the transfer of heat by convection in a fluid
convectional\-shnəl, -shən-əl\play adjective
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