an equation that equates the product of the pressure and the volume of one mole of a gas to the product of its thermodynamic temperature and the gas constant. The equation is exact for an ideal gas and is a good approximation for real gases at low pressures Also called ideal gas equation, ideal gas law
- Gas exchange
gas exchange The diffusion of gases from an area of higher concentration to an area of lower concentration, especially the exchange of oxygen and carbon dioxide between an organism and its environment. In plants, gas exchange takes place during photosynthesis. In animals, gases are exchanged during respiration.
noun 1. a district yielding natural gas.
[gas-fahyuh rd] /ˈgæsˌfaɪərd/ adjective 1. using a gas for fuel. adjective using a combustible gas as fuel
noun 1. a person who installs gas pipes and apparatus in buildings.