An aëriform fluid; -- a term used at first by chemists as synonymous with air, but since restricted to fluids supposed to be permanently elastic, as oxygen, hydrogen, etc., in distinction from vapors, as steam, which become liquid on a reduction of temperature. In present usage, since all of the supposed permanent gases have been liquified by cold and pressure, the term has resumed nearly its original signification, and is applied to any substance in the elastic or aëriform state.
A complex mixture of gases, of which the most important constituents are marsh gas, olefiant gas, and hydrogen, artificially produced by the destructive distillation of gas coal, or sometimes of peat, wood, oil, resin, etc. It gives a brilliant light when burned, and is the common gas used for illuminating purposes.
Any irrespirable aëriform fluid.
general adaptation syndrome. A consistent pattern of responses to stress that consists of three stages; alarm stage, resistance stage, and exhaustion stage. go to glossary index
general adaptation syndrome. Hans Selye's model to describe the biological reaction of an organism to sustained and unrelenting stress; there are several stages, culminating in death in extreme circumstances.
general adaptation syndrome. the response of the body to physiological stress.
General Adaptation Syndrome. The sequence of physiological reactions to prolonged and intense stress. The sequence consists of the alarm reaction, the state of resistance, and the stage of exhaustion.
A Helmontian term, defined at the start of his Opuscula medica inaudita as "a noncoagulable spirit, such as is belched out from fermenting wine, or likewise that red substance produced when aqua fortis is acting."
Air that comes in the breakdown of food.
air that collects in the stomach and intestines as a natural result of digesting food. Passed out of the body via the rectum or the mouth.
air that comes from the normal breakdown of food and is passed out of the body through the rectum (flatus) or the mouth (belch).
A substance like air. Nitrogen, oxygen and carbon dioxide are gases.
a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines
A naturally occurring mixture of hydrocarbon and non-hydrocarbon gases in porous formations beneath the earth's surface, often in association with petroleum. The principal constituent is methane.