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Cementation :: Cementation (n.) A process which consists in surrounding a solid body with the powder of other substances, and heating the whole to a degree not sufficient to cause fusion, the physical properties of the body being changed by chemical combination with powder; thus iron becomes steel by cementation with charcoal, and green glass becomes porcelain by cementation with sand..

Analyst :: Analyst (n.) One who analyzes; formerly, one skilled in algebraical geometry; now commonly, one skilled in chemical analysis..

Circulatory :: Circulatory (n.) A chemical vessel consisting of two portions unequally exposed to the heat of the fire, and with connecting pipes or passages, through which the fluid rises from the overheated portion, and descends from the relatively colder, maintaining a circulation..

Zymogen :: Zymogen (n.) A mother substance, or antecedent, of an enzyme or chemical ferment; -- applied to such substances as, not being themselves actual ferments, may by internal changes give rise to a ferment..

Process :: Process (n.) A series of actions, motions, or occurrences; progressive act or transaction; continuous operation; normal or actual course or procedure; regular proceeding; as, the process of vegetation or decomposition; a chemical process; processes of nature..

Dipropargyl :: Dipropargyl (n.) A pungent, mobile, volatile liquid, C6H6, produced artificially from certain allyl derivatives. Though isomeric with benzine, it is very different in its chemical relations. Called also dipropinyl..

Absorption :: Absorption (n.) An imbibing or reception by molecular or chemical action; as, the absorption of light, heat, electricity, etc..

Optography :: Optography (n.) The production of an optogram on the retina by the photochemical action of light on the visual purple; the fixation of an image in the eye. The object so photographed shows white on a purple or red background. See Visual purple, under Visual..

Resist :: Resist (n.) A substance used to prevent a color or mordant from fixing on those parts to which it has been applied, either by acting machanically in preventing the color, etc., from reaching the cloth, or chemically in changing the color so as to render it incapable of fixing itself in the fibers.. The pastes prepared for this purpose are called resist pastes..

Retort :: Retort (v. t.) A vessel in which substances are subjected to distillation or decomposition by heat. It is made of different forms and materials for different uses, as a bulb of glass with a curved beak to enter a receiver for general chemical operations, or a cylinder or semicylinder of cast iron for the manufacture of gas in gas works..

Mechanico-chemical :: Mechanico-chemical (a.) Pertaining to, connected with, or dependent upon, both mechanics and chemistry; -- said especially of those sciences which treat of such phenomena as seem to depend on the laws both of mechanics and chemistry, as electricity and magnetism..

Palmitin :: Palmitin (n.) A solid crystallizable fat, found abundantly in animals and in vegetables. It occurs mixed with stearin and olein in the fat of animal tissues, with olein and butyrin in butter, with olein in olive oil, etc. Chemically, it is a glyceride of palmitic acid, three molecules of palmitic acid being united to one molecule of glyceryl, and hence it is technically called tripalmitin, or glyceryl tripalmitate..

Alchemically :: Alchemically (adv.) In the manner of alchemy.

Dialyzer :: Dialyzer (n.) The instrument or medium used to effect chemical dialysis.

Bolthead :: Bolthead (n.) A long, straight-necked, glass vessel for chemical distillations; -- called also a matrass or receiver..

Saturate :: Saturate (v. t.) To satisfy the affinity of; to cause to become inert by chemical combination with all that it can hold; as, to saturate phosphorus with chlorine..

Voltameter :: Voltameter (n.) An instrument for measuring the voltaic electricity passing through it, by its effect in decomposing water or some other chemical compound acting as an electrolyte..

Spagyrist :: Spagyrist (n.) One of a sect which arose in the days of alchemy, who sought to discover remedies for disease by chemical means. The spagyrists historically preceded the iatrochemists..

Rot :: Rot (v. i.) To undergo a process common to organic substances by which they lose the cohesion of their parts and pass through certain chemical changes, giving off usually in some stages of the process more or less offensive odors; to become decomposed by a natural process; to putrefy; to decay..

Collagen :: Collagen (n.) The chemical basis of ordinary connective tissue, as of tendons or sinews and of bone. On being boiled in water it becomes gelatin or glue..

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