gas (gas) any elastic aeriform fluid in which the molecules are separated from one another and so have free paths.gas´eous
gas
gas [gas]
GAS,
GAS,
gas,
gas
Patient discussion about gas.
alveolar gas the gas in the alveoli of the lungs, where gaseous exchange with the capillary blood takes place.
blood gases the partial pressures of oxygen and carbon dioxide in blood; see under analysis.
coal gas a gas, poisonous because it contains carbon monoxide, produced by destructive distillation of coal; much used for domestic cooking.
laughing gas nitrous oxide.
tear gas one which produces severe lacrimation by irritating the conjunctivae.
gas (g s)n. pl. gas·es or gas·ses 1. The state of matter distinguished from the solid and liquid states by relatively low density and viscosity, relatively great expansion and contraction with changes in pressure and temperature, the ability to diffuse readily, and the spontaneous tendency to become distributed uniformly throughout any container. 2. A substance in the gaseous state. 3. A gaseous fuel, such as natural gas. 4. Gasoline. 5. A gaseous asphyxiant, an irritant, or a poison. 6. A gaseous anesthetic, such as nitrous oxide. 7. Flatulence. 8. Flatus. v. 1. To treat chemically with gas. 2. To overcome, disable, or kill with poisonous fumes. 3. To give off gas. |
gas
Etymology: Gk, chaos
gas [gas]
any elastic aeriform fluid in which the molecules are widely separated from each other and so have free paths.
alveolar gas the gas in the alveoli of the lungs, where gas exchange with the capillary blood takes place.
blood g's the partial pressures of oxygen and carbon dioxide in blood; see blood gas analysis.
laughing gas nitrous oxide.
gas pains pains caused by distention of the stomach or intestines by accumulation of air or other gases. The presence of gas is indicated by distention of the abdomen, belching, or discharge of gas through the rectum. Gas-forming foods include highly flavored vegetables such as onions, cabbage, and turnips; members of the bean family; and fruits such as melons and raw apples. Some seasonings and other chemical irritants also produce gas.
tear gas any of various irritant vapors dispensed by aerosol and causing pain and severe lacrimation in humans; some also cause irritation of exposed mucous membranes as well as vomiting. Common ones include chloroacetophenone (CN), o-chlorobenzylidenemalononitrile (see CS), and dibenz(b,f)-1,4-oxazepine (see cr); the most common of the three is CS (also known as mace).
GAS,
n.pr See syndrome, general adaptation.
GAS,
gas,
n a fluid with no definite volume or shape whose molecules are practically unrestricted by cohesive forces.
gas, laughing,
n See nitrous oxide.
gas, noble,
n a gas that will not oxidize; the inert gases (e.g., helium and neon).
gas, olefiant,
n a machine that uses ethylene oxide gas to sterilize objects that cannot withstand high temperatures, such as soft plastic and cloth.
gas
any elastic aeriform fluid in which the molecules are widely separated from each other and so have free paths.
alveolar gas
the gas in the alveoli of the lungs, where gaseous exchange with the capillary blood takes place. See also oxygen, carbon dioxide.
blood gas
see blood gas analysis.
gas bubble disease
a disease of fish in tanks in which the water is supersaturated with oxygen or nitrogen. Gas embolism develops in the gills. Air bubbles can be seen in the gills, eyes and under the skin and the fish show bizarre nervous behavior.
gas cap
a cap of gas above fluid or solid contents in a hollow viscus, e.g. in a static rumen. Seen radiologically in distended intestinal loops in paralytical ileus.
gas edema disease
see blue wing disease.
gas exchange
gases move by simple diffusion in response to pressure differences; net diffusion occurs from areas of high pressure to areas of lower pressure irrespective of whether the gas is present as a gas or in solution or gases moving from gas to solution or vice versa. The rate of exchange of gases in body tissues, e.g. between alveolar space and erythrocyte, is influenced by many other factors, especially the diffusion distance and the solubility of the gas.
gas inhalation
irritant gases, e.g. manure gas, cause pulmonary edema.
laughing gas
nitrous oxide.
manure gas poisoning
see manure pit gas poisoning.
tear gas
a gas that produces severe lacrimation by irritating the conjunctivae. See lacrimator.
gas transport
relates to the efficiency of transport of gas, e.g. oxygen, by the patient as a whole. The efficiency of gas transport varies widely between normal individuals and between species, e.g. athletic breeds of horses and dogs have much faster gas transport systems than human athletes; the efficiency of gas transport in the individual depends largely on the rapidity of increase in minute ventilation, plus a similar rate of increase in cardiac output.
gas tube
see crookes' tube.
gas
A volatilized liquid. See Biogas, Compressed gas, Flammable gas, Greenhouse gas, Mustard, Natural gas, Oxidant gas, Phosgene gas Occupational medicine A gas phase contaminant. See Inhalant.
Patient discussion about gas.
Q. why do i have gas and bloating my bowels are weird and my stomach is sour also. i have pain in the top of my stomach
A. There are many different things that can cause them. Do you also suffer from diarrhea? Do you have diabetes? Do you have pain that is relieved by eating or after going to the bathroom?
Among the more common causes there are IBS (http://en.wikipedia.org/wiki/Irritable_bowel_syndrome), diabetes, malabsorption (e.g. lactose intolerance http://en.wikipedia.org/wiki/Lactose_intolerance or celiac http://en.wikipedia.org/wiki/Coeliac_disease), all of these, unfortunately, can't be diagnosed over the net, so if it keeps bothering you or if you have warning sign (such as Nocturnal abdominal pain (sleep awakening), Weight loss, Blood in the stool , Severely tender abdomen , Succussion splash , Fever , Vomiting , fatty diarrhea , New onset diarrhea) you should see a doctor.
Among the more common causes there are IBS (http://en.wikipedia.org/wiki/Irritable_bowel_syndrome), diabetes, malabsorption (e.g. lactose intolerance http://en.wikipedia.org/wiki/Lactose_intolerance or celiac http://en.wikipedia.org/wiki/Coeliac_disease), all of these, unfortunately, can't be diagnosed over the net, so if it keeps bothering you or if you have warning sign (such as Nocturnal abdominal pain (sleep awakening), Weight loss, Blood in the stool , Severely tender abdomen , Succussion splash , Fever , Vomiting , fatty diarrhea , New onset diarrhea) you should see a doctor.
Q. I often have gases in my stomach. And it hurts. Is there specific food I should avoid? thanks
A. Why don't you try to run a log of what you eat and how did you feel after that? The digestive system of each of us is different, so it may not be possible to give you advice that would be good for you specifically. If these complaints bothers you, you may also want to consult a docotr.
www.nlm.nih.gov/medlineplus/ency/article/003124.htm
Read more or ask a question about gaswww.nlm.nih.gov/medlineplus/ency/article/003124.htm
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