[gas-ee-uh s, gash-uh s] /ˈgæs i əs, ˈgæʃ əs/
existing in the state of a ; not solid or liquid.
pertaining to or having the characteristics of .
Informal. lacking firmness or solidity; uncertain; not definite.
(defs 1, 3).
/ˈɡæsɪəs; -ʃəs; -ʃɪəs; ˈɡeɪ-/
of, concerned with, or having the characteristics of a gas
1799, from gas (n.) + -ous.
gaseous gas·e·ous (gās’ē-əs, gāsh’əs)
One of four main states of matter, composed of molecules in constant random motion. Unlike a solid, a gas has no fixed shape and will take on the shape of the space available. Unlike a liquid, the intermolecular forces are very small; it has no fixed volume and will expand to fill the space available.
gaseous adjective (gās’ē-əs, gāsh’əs)
noun, Chemistry. 1. the passage of gas through microporous barriers, a technique used for isotope separation, especially in the preparation of fuel for nuclear reactors.
- Gas equation
noun 1. 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, […]
- 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.