con·vec·tion | \kən-ˈvek-shən \

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

Keep scrolling for more

Other Words from convection

convectional \kən-ˈvek-shnəl, -shə-nᵊl \ adjective

Examples of convection in a Sentence

Recent Examples on the Web

The sobering reality is the exact location and timing of these often-deadly flash floods, caused by summertime convection, are nearly impossible to predict even an hour or two beforehand. Jeff Halverson, Washington Post, "Anatomy of Tuesday’s devastating flash flood in Frederick," 16 May 2018 Beneath the KitchenAid stacked convection and conventional wall ovens is a warming oven. Joan Walden,, "Property of the Week: 3 Erica Lane, West Simsbury," 20 July 2017 Fit grill with convection plate and set pork on top. Bon Appetit, "Sticky-Sweet Grilled Pork Shoulder," 28 May 2018 The first is a rather unorganized blob of convection previously associated with a tropical wave of energy at the surface. Matthew Cappucci, Washington Post, "From Houston to Corpus Christi, torrential rain may fall at times for days," 18 June 2018 This means that there could either be a convection current or some type of expanding gas that can get this wheel to rotate. Rhett Allain, WIRED, "The Physics of a Puzzling Perpetual Motion Machine," 12 June 2018 The dunes must be much more recent than the action of that convection, or they would be churned apart by it. Scott K. Johnson, Ars Technica, "Frozen Pluto has wind-blown dunes made of methane sand," 31 May 2018 And once the child’s skin temperature soared above 95 degrees, the convection process that draws heat from the skin would reverse, and his body would start absorbing heat from the air. Deborah Sullivan Brennan,, "Study drives home danger of leaving kids in parked cars," 18 June 2018 That is hypothesized to be the result of slow convection in the thick layer of nitrogen and other ices over a few hundred thousand years. Scott K. Johnson, Ars Technica, "Frozen Pluto has wind-blown dunes made of methane sand," 31 May 2018

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.

See More

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

Keep scrolling for more

Learn More about convection

Share convection

Statistics for convection

Last Updated

24 Sep 2018

Look-up Popularity

Time Traveler for convection

The first known use of convection was circa 1623

See more words from the same year

Keep scrolling for more

More Definitions for convection



English Language Learners Definition of convection

: 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 \

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 \

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 \ adjective
convective \-ˈvek-tiv \ adjective

Keep scrolling for more

Comments on convection

What made you want to look up convection? Please tell us where you read or heard it (including the quote, if possible).


one that holds something together

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!