Definition of gas

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Gas (n.) An aeriform 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 aeriform state..

Lern More About Gas

Bell Jar :: Bell jar () A glass vessel, varying in size, open at the bottom and closed at the top like a bell, and having a knob or handle at the top for lifting it. It is used for a great variety of purposes; as, with the air pump, and for holding gases, also for keeping the dust from articles exposed to view..
Hoove :: Hoove (n.) A disease in cattle consisting in inflammation of the stomach by gas, ordinarily caused by eating too much green food; tympany; bloating..
Distillation :: Distillation (n.) The separation of the volatile parts of a substance from the more fixed; specifically, the operation of driving off gas or vapor from volatile liquids or solids, by heat in a retort or still, and the condensation of the products as far as possible by a cool receiver, alembic, or condenser; rectification; vaporization; condensation; as, the distillation of illuminating gas and coal, of alcohol from sour mash, or of boric acid in steam..
Snail :: Snail (n.) Any gastropod having a general resemblance to the true snails, including fresh-water and marine species. See Pond snail, under Pond, and Sea snail..
Ozonometer :: Ozonometer (n.) An instrument for ascertaining the amount of ozone in the atmosphere, or in any gaseous mixture..
Togas :: Togas (pl. ) of Tog.
Dasymeter :: Dasymeter (n.) An instrument for testing the density of gases, consisting of a thin glass globe, which is weighed in the gas or gases, and then in an atmosphere of known density..
Planula :: Planula (n.) In embryonic development, a vesicle filled with fluid, formed from the morula by the divergence of its cells in such a manner as to give rise to a central space, around which the cells arrange themselves as an envelope; an embryonic form intermediate between the morula and gastrula. Sometimes used as synonymous with gastrula..
Bracket :: Bracket (n.) A gas fixture or lamp holder projecting from the face of a wall, column, or the like..
Proboscidifera :: Proboscidifera (n. pl.) A subdivision of the taenioglossate gastropods, including the fig-shells (Pyrula), the helmet shells (Cassis), the tritons, and allied genera..
Gastrohepatic :: Gastrohepatic (a.) Pertaining to the stomach and liver; hepatogastric; as, the gastrohepatic, or lesser, omentum..
Gastornis :: Gastornis (n.) A genus of large eocene birds from the Paris basin.
Anxiety :: Anxiety (n.) A state of restlessness and agitation, often with general indisposition and a distressing sense of oppression at the epigastrium..
Megalo- :: Megalo- () Combining forms signifying: (a) Great, extended, powerful; as, megascope, megacosm..
Aquitanian :: Aquitanian (a.) Of or pertaining to Aquitania, now called Gascony..
Agast :: Agast (p. p. & a.) See Aghast.
Aghast :: Aghast (v. t.) See Agast, v. t..
Gastrointestinal :: Gastrointestinal (a.) Of or pertaining to the stomach and intestines; gastroenteric.
Slit-shell :: Slit-shell (n.) Any species of Pleurotomaria, a genus of beautiful, pearly, spiral gastropod shells having a deep slit in the outer lip. Many fossil species are known, and a few living ones are found in deep water in tropical seas..
Stomate :: Stomapoda (n. pl.) An order of Crustacea including the squillas. The maxillipeds are leglike in form, and the large claws are comblike. They have a large and elongated abdomen, which contains a part of the stomach and heart; the abdominal appendages are large, and bear the gills. Called also Gastrula, Stomatopoda, and Squilloidea..
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