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Fixation :: Fixation (n.) The act of uniting chemically with a solid substance or in a solid form; reduction to a non-volatile condition; -- said of gaseous elements.

Olein :: Olein (n.) A fat, liquid at ordinary temperatures, but solidifying at temperatures below 0¡ C., found abundantly in both the animal and vegetable kingdoms (see Palmitin). It dissolves solid fats, especially at 30-40¡ C. Chemically, olein is a glyceride of oleic acid; and, as three molecules of the acid are united to one molecule of glyceryl to form the fat, it is technically known as triolein. It is also called elain..

Allomerism :: Allomerism (n.) Variability in chemical constitution without variation in crystalline form.

Equivalent :: Equivalent (n.) That comparative quantity by weight of an element which possesses the same chemical value as other elements, as determined by actual experiment and reference to the same standard. Specifically: (a) The comparative proportions by which one element replaces another in any particular compound; thus, as zinc replaces hydrogen in hydrochloric acid, their equivalents are 32.5 and 1. (b) The combining proportion by weight of a substance, or the number expressing this proportion, in any

Molecule :: Molecule (n.) A group of atoms so united and combined by chemical affinity that they form a complete, integrated whole, being the smallest portion of any particular compound that can exist in a free state; as, a molecule of water consists of two atoms of hydrogen and one of oxygen. Cf. Atom..

Elastin :: Elastin (n.) A nitrogenous substance, somewhat resembling albumin, which forms the chemical basis of elastic tissue. It is very insoluble in most fluids, but is gradually dissolved when digested with either pepsin or trypsin..

Chondrigen :: Chondrigen (n.) The chemical basis of cartilage, converted by long boiling in water into a gelatinous body called chondrin..

Slacken :: Slacken (v. t.) To deprive of cohesion by combining chemically with water; to slake; as, to slack lime..

Keratin :: Keratin (n.) A nitrogenous substance, or mixture of substances, containing sulphur in a loose state of combination, and forming the chemical basis of epidermal tissues, such as horn, hair, feathers, and the like. It is an insoluble substance, and, unlike elastin, is not dissolved even by gastric or pancreatic juice. By decomposition with sulphuric acid it yields leucin and tyrosin, as does albumin. Called also epidermose..

Physicochemical :: Physicochemical (a.) Involving the principles of both physics and chemistry; dependent on, or produced by, the joint action of physical and chemical agencies..

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..

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..

Mineral :: Mineral (v. i.) An inorganic species or substance occurring in nature, having a definite chemical composition and usually a distinct crystalline form. Rocks, except certain glassy igneous forms, are either simple minerals or aggregates of minerals..

Allotropy :: Allotropy (n.) The property of existing in two or more conditions which are distinct in their physical or chemical relations.

Blancher :: Blancher (n.) One who, or that which, blanches or whitens; esp., one who anneals and cleanses money; also, a chemical preparation for this purpose..

Chemolysis :: Chemolysis (n.) A term sometimes applied to the decomposition of organic substance into more simple bodies, by the use of chemical agents alone..

Distillable :: Distillable (a.) Capable of being distilled; especially, capable of being distilled without chemical change or decomposition; as, alcohol is distillable; olive oil is not distillable..

Coagulate :: Coagulate (v. t.) To cause (a liquid) to change into a curdlike or semisolid state, not by evaporation but by some kind of chemical reaction; to curdle; as, rennet coagulates milk; heat coagulates the white of an egg..

Tyrosin :: Tyrosin (n.) A white crystalline nitrogenous substance present in small amount in the pancreas and spleen, and formed in large quantity from the decomposition of proteid matter by various means, -- as by pancreatic digestion, by putrefaction as of cheese, by the action of boiling acids, etc. Chemically, it consists of oxyphenol and amidopropionic acid, and by decomposition yields oxybenzoic acid, or some other benzol derivative..

Od :: Od (n.) An alleged force or natural power, supposed, by Reichenbach and others, to produce the phenomena of mesmerism, and to be developed by various agencies, as by magnets, heat, light, chemical or vital action, etc.; -- called also odyle or the odylic force..

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