Look up: Convection

1. 
   convection
   Fluid circulation driven by temperature gradients; the transfer of heat by this automatic circulation (see also Educator's Guide to Convection ).
   Found on http://www.solarviews.com/eng/terms.htm
   
   
2. 
   Convection
   The physical upwelling of hot matter, thus transporting energy from a lower, hotter region to a higher, cooler region. A bubble of gas that is hotter than its surroundings expands and rises. When it has cooled by passing on its extra heat to its surroundings, the bubble sinks again. Convection can occur when there is a substantial decrease in temperature with height, such as in the Sun's convection zone.
   Found on http://hesperia.gsfc.nasa.gov/sftheory/g
   
   
3. 
   convection
   Fluid motion which results from the action of unbalanced buoyancy forces.
   Found on http://taylor.math.ualberta.ca/~bruce/gl
   
   
4. 
   convection
   Atmospheric or oceanic motions that are predominately vertical and that result in vertical transport and mixing of atmospheric or oceanic properties. Because the most striking meteorological features result if atmospheric convective motion occurs in conjunction with the rising current of air (i.e., updrafts), convection is sometimes used to imply only upward vertical motion.
   Found on http://cdiac.ornl.gov/glossary.html
   
   
5. 
   Convection
   The motion of a liquid driven by gravity and temperature differences in the material. In the Earth, where pressure and temperature are high, rocks can act like viscous fluids on a time scale of millions of years. Thus, scientists believe that convection is an important process in the rocks that make up the Earth.
   Found on http://www.geophys.washington.edu/SEIS/P
   
   
6. 
   Convection
   The process of heat transfer through fluids by means of rising currents.
   Found on http://www.bbc.co.uk/weather/weatherwise
   
   
7. 
   convection
   [n] - (meteorology) the vertical movement of heat or other properties by massive motion within the atmosphere 2. [n] - the transfer of heat through a fluid (liquid or gas) caused by molecular motion
   Found on http://www.webdictionary.co.uk/definitio
   
   
8. 
   Convection
   [pronounce: con-veck-shun] A way that heat travels through liquids and gases
   Found on http://www.longman.co.uk/tt_secsci/resou
   
   
9. 
   Convection
   This is a way of moving heat energy around. In a fluid (i.e. a liquid or gas) heat can travel by convection. For example, hot air is less dense than cold air, so the hot air rises up, carrying its heat energy with it. Convection is not possible in a vacuum. See also conduction and radiation
   Found on http://www.users.zetnet.co.uk/computing/
   
   
10. 
    Convection
    Transfer of heat by the movement of molecules in a gas or liquid with the less dense fluid rising. The majority of heat transfer in a fire is by convection
    Found on http://www.fire.org.uk/glossary.htm
    
    
11. 
    Convection
    In meteorology the transference of heat by the movement of vertical currents in the atmosphere.
    Found on http://www.aeroplanemonthly.com/glossary
    
    
12. 
    convection
    Heat transfer through the movement of a fluid, eg: warm air rising
    Found on http://www.fisicx.com/quickreference/sci
    
    
13. 
    convection
    the transfer of heat within gases and liquids, due to the free flow of particles. A convection current is where rising hot air is replaced by cold air die to its higher density.
    Found on http://www.sre.co.uk/library/glossary
    
    
14. 
    Convection
    1. The circulatory motion that occurs in a fluid at a non-uniform temperature owing to the variation of its density and the action of gravity. 2. The transfer of heat by this automatic circulation of fluid.
    Found on http://www.flowmeterdirectory.com/flowme
    
    
15. 
    convection
    The mechanism for transfer of heat from a solid surface (such as a component) to a surrounding fluid (usually air). Natural convection is heat transfer to ‘still` air; forced convection involves heat transfer to air that is moved by artificial means such as a fan.
    Found on http://www.ami.ac.uk/courses/topics/0100
    
    
16. 
    convection
    In meteorology,the conditions whereby the air motion in the atmosphere is mainly vertical,upwards,especially of warm layers Category: Management in the public and private sector • organized internal motions within a layer of air, leading to vertical transport of heat etc Category: Physics • the transfer of heat in,or by,a liquid or a gas by the movement of the medium itself...
    Found on http://www.mijnwoordenboek.nl/definition
    
    
17. 
    Convection
    A method of transferring heat by the actual movement of heated molecules, usually by a freestanding unit such as a furnace.
    Found on http://www.rookinspections.com/glossary/
    
    
18. 
    Convection
    Con·vec'tion noun [ Latin convectio , from convehere to bring together; con- + vehere to carry.] 1. The act or process of conveying or transmitting. 2. (Physics) A process of transfer or transmission, as of heat or electricity, by means of currents in liquids or gases, resulting from changes of temperature and other causes. « Liquids are ge ...
    Found on http://www.encyclo.co.uk/webster/C/152
    
    
19. 
    convection
    Transmission of energy or mass by a medium involving movement of the medium itself. The circulatory movement that occurs in a fluid at a nonuniform temperature owing to the variation of its density and the action of gravity. ... (12 Dec 1998) ...
    Found on http://www.mondofacto.com/facts/dictiona
    
    
20. 
    Convection
    `Convection` in the most general terms refers to the movement of currents within fluids (i.e. liquids, gases and rheids) Convection is one of the major modes of heat transfer and mass transfer. In fluids, convective heat and mass transfer take place through both diffusion - the random Brownian motion of individual particles in the fluid - and by advection, in which matter or heat is transported by the larger-scale motion of currents in the flui...
    Found on http://en.wikipedia.org/wiki/Convection
    
    
21. 
    convection
    (kәn-vek´shәn) the act of conveying or transmission; specifically, transmission of heat in a liquid or gas by the bulk movement of heated particles to a cooler area. See also convection current.
    Found on http://www.mercksource.com/pp/us/cns/cns
    
    
22. 
    Convection
    • (n.) The act or process of conveying or transmitting. • (n.) A process of transfer or transmission, as of heat or electricity, by means of currents in liquids or gases, resulting from changes of temperature and other causes.
    Found on http://thinkexist.com/dictionary/meaning
    
    
23. 
    convection
    process by which heat is transferred by movement of a heated fluid such as air or water.[21 related articles]
    Found on http://www.britannica.com/eb/a-z/c/136
    
    
24. 
    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]
    Found on
    
    
25. 
    Convection
    Convection involves the transfer of heat energy by means of vertical mass motions through a medium.
    Found on http://www.physicalgeography.net/physgeo