The process where heat spreads through the motion of a gas or liquid. See Conduction.

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  • convection — [ kɔ̃vɛksjɔ̃ ] n. f. • 1877; lat. convectum, de vehere « transporter » 1 ♦ Phys. Transport d une grandeur physique (masse, courant électrique, chaleur) dans un fluide par un déplacement de l ensemble de ses molécules. Convection libre ou… …   Encyclopédie Universelle

  • Convection — Con*vec tion, n. [L. convectio, fr. convehere to bring together; con + vehere to carry.] 1. The act or process of conveying or transmitting. [1913 Webster] 2. (Physics) A process of transfer or transmission, as of heat or electricity, by means of …   The Collaborative International Dictionary of English

  • convection — (n.) 1620s, from L. convectionem (nom. convectio) the act of carrying, from convect , pp. stem of convehere to carry together, from com together (see COM (Cf. com )) + vehere to carry (see VEHICLE (Cf. vehicle)) …   Etymology dictionary

  • convection — ► NOUN ▪ transference of mass or heat within a fluid caused by the tendency of warmer and less dense material to rise. DERIVATIVES convect verb convectional adjective convective adjective. ORIGIN Latin, from convehere, from vehere carry …   English terms dictionary

  • convection — [kən vek′shən] n. [L convectio < pp. of convehere, to bring together < com , together + vehere, to carry, bear] 1. a transmitting or conveying 2. a) the mass movement of parts of a fluid within the fluid because of differences in the… …   English World dictionary

  • Convection — This figure shows a calculation for thermal convection in the Earth s mantle. Colors closer to red are hot areas and colors closer to blue are cold areas. A hot, less dense lower boundary layer sends plumes of hot material upwards, and likewise,… …   Wikipedia

  • Convection — La convection est un mode de transfert qui implique un déplacement de matière dans le milieu, par opposition à la conduction thermique ou diffusion de la matière. La matière est advectée (transportée conduite, mais ces termes sont en fait… …   Wikipédia en Français

  • convection — convectional, adj. /keuhn vek sheuhn/, n. 1. Physics. the transfer of heat by the circulation or movement of the heated parts of a liquid or gas. 2. Meteorol. the vertical transport of atmospheric properties, esp. upward (distinguished from… …   Universalium

  • convection — [[t]kənve̱kʃ(ə)n[/t]] N UNCOUNT Convection is the process by which heat travels through air, water, and other gases and liquids. [TECHNICAL] ...clouds which lift warm, moist air by convection high into the atmosphere. ...convection currents …   English dictionary

  • convection — noun Etymology: Late Latin convection , convectio, from Latin convehere to bring together, from com + vehere to carry more at way Date: circa 1623 1. the action or process of conveying 2. a. the circulatory motion that occurs in a fluid at a… …   New Collegiate Dictionary

  • convection — Conveyance of heat in liquids or gases by movement of the heated particles, as when the layer of water at the bottom of a heated pot rises or the warm air of a room ascends to the ceiling. [L. con veho, pp. vectus, to carry or bring together] * * …   Medical dictionary

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