combustion air definition, combustion air meaning | English dictionary

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combustion

  

      n  
1    the process of burning  
2    any process in which a substance reacts with oxygen to produce a significant rise in temperature and the emission of light  
3    a chemical process in which two compounds, such as sodium and chlorine, react together to produce heat and light  
4    a process in which a compound reacts slowly with oxygen to produce little heat and no light  
     (C15: from Old French, from Latin comburere to burn up, from com- (intensive) + urere to burn)  
  combustive      n, adj  


combustion chamber  
      n   an enclosed space in which combustion takes place, such as the space above the piston in the cylinder head of an internal-combustion engine or the chambers in a gas turbine or rocket engine in which fuel and oxidant burn  
external-combustion engine  
      n   a heat engine in which the working fluid is heated in an external boiler or heat exchanger and is thus isolated from the process of fuel combustion  
heat of combustion  
      n     (Chem)   the heat evolved when one mole of a substance is burnt in oxygen at constant volume  
internal-combustion engine  
      n   a heat engine in which heat is supplied by burning the fuel in the working fluid (usually air)  
spontaneous combustion  
      n   the ignition of a substance or body as a result of internal oxidation processes, without the application of an external source of heat, occurring in finely powdered ores, coal, straw, etc.  
English Collins Dictionary - English Definition & Thesaurus  
Collaborative Dictionary     English Definition
exp.
When something is 'in the air', it means something exciting or significant is taking place or about to happen. Ex.: Spring is in the air - it's time for change!
n.
means a different approach or a welcome change to something. Ex.: anna has lots of wonderful ideas and motivation - she is a breath of fresh air.
[Fig.]
n.
poisonous gas that pollutes the air in coal mines
n.
sigle of "Air Launched Cruise Missile" that can find his target electronically by his own means at a long distance according to a memorized map of the landscape he has to pass over
can also be launched from the soil or the sea. they can be reprogrammed or destroyed during the fly by the "sender"
n.
a large pocket of very cold air, typically the coldest air in the Northern Hemisphere, which sits over the polar region.

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"Collins English Dictionary 5th Edition first published in 2000 © HarperCollins Publishers 1979, 1986, 1991, 1994, 1998, 2000 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"