CONVECTION
convection
(noun) the transfer of heat through a fluid (liquid or gas) caused by molecular motion
convection
(noun) (meteorology) the vertical movement of heat or other properties by massive motion within the atmosphere
Source: WordNet® 3.1
Etymology
Noun
convection (countable and uncountable, plural convections)
The process of conveying something.
(physics) The transmission of heat in a fluid by the circulation of currents.
(meteorology) 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.
Coordinate terms
• (physics): conduction, radiation
Source: Wiktionary
Con*vec"tion, n. Etym: [L. convectio, fr. convehere to bring
together; con- + vehere to carry.]
1. The act or process of conveying or transmitting.
2. (Physics)
Definition: 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 generally heated by convection -- when heat is applied
from bellow. Nichol.
Source: Webster’s Unabridged Dictionary 1913 Edition