con·​vec·​tion | \ kən-ˈvek-shən How to pronounce convection (audio) \

Definition of convection

1 : the action or process of conveying
2a : movement in a gas or liquid in which the warmer parts move up and the cooler parts move down convection currents
b : the transfer of heat by convection foods cooked by convection — compare conduction, radiation

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Other Words from convection

convectional \ kən-​ˈvek-​shnəl How to pronounce convectional (audio) , -​shə-​nᵊl \ adjective

Examples of convection in a Sentence

Recent Examples on the Web

The temperature change is larger at night and smaller during the day, because surface warming and convection driven by the Sun overwhelm the influence of the turbines. Scott K. Johnson, Ars Technica, "Wind power makes the ground warmer even as it cools the planet," 7 Oct. 2018 When there's strong enough convection, along with plenty of moisture available, a winter storm can produce thundersnow. Doyle Rice, USA TODAY, "Forget thundersnow: There's thunder ice in the central U.S.," 22 Feb. 2018 Fires release huge amounts of heat and water vapor into the atmosphere, the same factors that create rain clouds, winds, and convection currents—the ingredients of weather. Popular Mechanics Editors, Popular Mechanics, "How Forest Fires Make Their Own Hellish Weather," 12 Nov. 2018 This process determines the solar cycles, where solar activity grows from a relatively calm minimum up to a fierce solar maximum full of active convection and eruptive flares. Jay Bennett, Popular Mechanics, "The New Science of the Sun Will Be Astounding—And Possibly Terrifying," 9 Aug. 2018 But an air fryer, using only a small amount of oil heated and circulated by internal convection fans, makes crisp French fries, spring rolls, mozzarella sticks, mini empanadas, and more with a fraction of the calories and fat. Betty Gold, Good Housekeeping, "The 5 Best Air Fryers for Making Crispy Comfort Foods So Much Healthier," 20 Nov. 2018 In addition to the dual-oven range, Buzzetta also incorporated Bertazzoni's convection steam and speed ovens, along with two warming drawers, into the island, which provide additional and varied cooking methods. Maggie Burch, House Beautiful, "Exclusive: How Antonino Buzzetta Transformed His Own Kitchen," 9 Nov. 2018 In space, there is no convection; everything has to be radiated. Chris Lee, Ars Technica, "Edge on cooling from nanostructure beats physical limit," 11 Sep. 2018 Unlike a standard grill, which uses convection, or hot air, to cook food, an infrared grill, which is fitted with a wire-mesh, ceramic, or high-temperature glass panel, uses radiant heat. John Loecke, ELLE Decor, "Shopping Guide: Outdoor Grills," 3 Apr. 2010

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.

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First Known Use of convection

circa 1623, in the meaning defined at sense 1

History and Etymology for convection

Late Latin convection-, convectio, from Latin convehere to bring together, from com- + vehere to carry — more at way

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Statistics for convection

Last Updated

4 Jun 2019

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Time Traveler for convection

The first known use of convection was circa 1623

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English Language Learners Definition of convection

technical : 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


con·​vec·​tion | \ kən-ˈvek-shən How to pronounce convection (audio) \

Kids Definition of convection

: 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.


con·​vec·​tion | \ kən-ˈvek-shən How to pronounce convection (audio) \

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

Other Words from convection

convectional \ -​shnəl, -​shən-​ᵊl How to pronounce convectional (audio) \ adjective
convective \ -​ˈvek-​tiv How to pronounce convective (audio) \ adjective

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More from Merriam-Webster on convection

Rhyming Dictionary: Words that rhyme with convection

Spanish Central: Translation of convection

Nglish: Translation of convection for Spanish Speakers

Britannica English: Translation of convection for Arabic Speakers Encyclopedia article about convection

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