convection [ k uh n- vek-sh uh n ] SHOW IPA / kənˈvɛk ʃən / PHONETIC RESPELLING noun . Physics the transfer of heat by the circulation or movement of the heated parts of a liquid or gas. . Meteorology the vertical transport of atmospheric properties, especially upward (distinguished from advection). the act of conveying or transmitting. Words nearby convection conv.
convective discharge Origin of convection 1615–25;
Late Latin convectiōn-
) a bringing together. See
-ion OTHER WORDS FROM convection con·vec·tion·al, adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for convection
I know,” cried Vane—“
convection: it has to do with water expanding and rising when it is hot and descending when it is cold.
The escape of heat from a cooling mass is effected by conduction, or by
convection, or by both.
The current in an electrolyte would therefore be also a current of
convection; now, it acts on the magnetic needle.
The subject of
convection will be treated of in a future chapter, and would scarcely be understood in this place. British Dictionary definitions for convection noun a process of heat transfer through a gas or liquid by bulk motion of hotter material into a cooler region Compare conduction (def. 1) 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 geology the slow circulation of subcrustal material, thought to be the mechanism by which tectonic plates are moved Derived forms of convection convectional, adjective convective, adjective Word Origin for convection
C19: from Late Latin
convectiō a bringing together, from Latin convehere to bring together, gather, from vehere to bear, carry
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Medical definitions for convection n. Heat transfer in a gas or liquid by the circulation of currents from one region to another. Fluid motion caused by an external force such as gravity.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for convection Current in a fluid caused by uneven distribution of heat. For example, air on a part of the Earth's surface warmed by strong sunlight will be heated by contact with the ground and will expand and flow upward, creating a region of low pressure below it; cooler surrounding air will then flow in to this low pressure region. The air thus circulates by convection, creating winds. See Note at conduction.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for convection
The motion of warm material that rises, cools off, and sinks again, producing a continuous circulation of material and transfer of
heat. Some examples of processes involving convection are boiling water, in which heat is transferred from the stove to the air; the circulation of the atmosphere of the Earth, transferring heat from the equator to the North Pole and South Pole; and plate tectonics, in which heat is transferred from the interior of the Earth to its surface.
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.