gas

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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

Abbreviation for group A streptococci , under streptococcus.

gas

(gas),
1. A thin fluid, such as air, capable of indefinite expansion but convertible by compression and cold into a liquid and, eventually, a solid.
2. In clinical practice, a liquid entirely in its vapor phase at one atmosphere of pressure because ambient temperature is above its boiling point.
[coined by J.B. van Helmont, Flemish chemist and physician, 1579-1644]

gas

(găs)
n. pl. gases or gasses
1.
a. 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.
b. A substance in the gaseous state.
2. A gaseous asphyxiant, irritant, or poison.
3. A gaseous anesthetic, such as nitrous oxide.
4.
a. Flatulence.
b. Flatus.
v. gassed, gassing, gases or gasses
v.tr.
1. To treat chemically with gas.
2. To overcome, disable, or kill with poisonous fumes.

GALNS

A gene on chromosome 16q24.3 that encodes N-acetylgalactosamine-6-sulfatase, a lysosomal exohydrolase required for the degradation of glycosaminoglycans, keratan sulfate and chondroitin 6-sulfate.

Molecular pathology
Defects of GALNS cause Morquio A syndrome, a lysosomal storage disease.

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.

gas

(gas)
1. Fluid, like air, capable of indefinite expansion but convertible by compression and cold into a liquid and, eventually, a solid.
2. In clinical practice, a substance entirely in its vapor phase at 1 atmosphere of pressure because ambient temperature is above its boiling point.
[coined by J.B. van Helmont, Flemish chemist and physician, 1579-1644]

gas

(gas)
1. A thin fluid, such as air, capable of indefinite expansion but convertible by compression and cold into a liquid and, eventually, a solid.
2. In clinical practice, a liquid entirely in its vapor phase at one atmosphere of pressure because ambient temperature is above its boiling point.
[coined by J.B. van Helmont, Flemish chemist and physician, 1579-1644]

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.

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

More discussions about gas
References in periodicals archive ?
The air moving through the soil strips the contaminants from the soil voids and brings them in the gaseous state to the surface for collection and treatment.
EGAS had previously signed a final contract with the Norwegian Hoegh for the first floating ship to receive and store LNG shipments and re-convert it to its gaseous state for it to be pumped to the national gas grid.
Biomass incineration, the process of burning wood for fuel, converts large amounts of carbon from a solid state to a gaseous state. This directly affects the climate of the surrounding neighborhoods, in that most of the gases produced are greenhouse gases that trap pollution and infrared radiation.
When in liquid form, natural gas takes up to 600 times less space than in its gaseous state, which makes it feasible and economic to transport over long distances.
Compared to other elements, inert gases possess additional energy that keeps them in a higher vibrational, more gaseous state. Although higher molecular-weight elements tend to be liquids or solids, xenon and krypton--with molecular weights greater than iron, nickel, copper, and zinc--exist as gases.
In other words, at relatively low temperatures, arsenic goes from a solid directly to a gaseous state. When the gas stream cools, the arsenic forms particles less than 1 micrometer in diameter, which are very difficult to capture in traditional pollution control devices.
In addition, Kirk says, "despite the efficiency of the gas in transporting heat away, a reservoir at the required temperature can be established under a collector of modest size (a few kilometers in radius), provided the permeable layer is relatively thin." Some such mechanism seems likely, he says, since a deposit of solid nitrogen probably cannot get energy fast enough from nitrogen in a gaseous state to drive geysers as powerful as those in the Voyager photos.
The gasification ship will turn liquefied gas into its gaseous state, to facilitate its siphoning into the national gas distribution grid.
Of this amount, the volume of natural gas in a gaseous state amounted to 14.141 billion cubic meters (up 5.2%), associated petroleum gas - 14.165 billion cubic meters (down 1.1%).
The LNG will be returned to a gaseous state onboard the vessels and fed into the pipeline to serve customers across Florida.
The abundance of the gas and its relatively clean burning process makes it a good source of fuel, but due to its gaseous state at room temperature, methane is difficult to transport from its source.
The LNG, is then returned to a gaseous state and piped into the UK's National Transmission System.