from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The act or process of conveying; transmission.
- n. Physics Heat transfer in a gas or liquid by the circulation of currents from one region to another.
- n. Physics Fluid motion caused by an external force such as gravity.
- n. Meteorology The transfer of heat or other atmospheric properties by massive motion within the atmosphere, especially by such motion directed upward.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The process of conveying something.
- n. The transmission of heat in a fluid or gas by the circulation of currents.
- n. The vertical movement of heat and moisture, especially by updrafts and downdrafts in an unstable air mass. The terms convection and thunderstorm are often used interchangeably, although thunderstorms are only one form of convection. Towering cumulus clouds are visible forms of convection.
from the GNU version of the Collaborative International Dictionary of English
- 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.
from The Century Dictionary and Cyclopedia
- n. The act of carrying or conveying; specifically, the transference of heat or electricity through the change of position of the heated or electrified body: distinguished from conduction (which see).
- n. by liberation of the latent heat of evaporation which remains with the aqueous vapor contained in the air until it is liberated by condensation into cloud. In so far as the liberated heat remains in the cloud, it may be consumed in reëvaporating the cloudy particles or be lost by radiation; in so far as it is brought down to the earth with the rain or snow, it affects the local climate powerfully.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the transfer of heat through a fluid (liquid or gas) caused by molecular motion
- n. (meteorology) the vertical movement of heat or other properties by massive motion within the atmosphere
Late Latin convectiō, convectiōn-, from convectus, past participle of convehere, to carry together : Latin com-, com- + Latin vehere, to carry.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin convectionem, from convectio ("act of carrying"), from convect-, past participle of convehere ("to carry together"), combination of com- and vehere. (Wiktionary)