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Pharmacopoeia :: Pharmacopoeia (n.) A chemical laboratory.

Lignin :: Lignin (n.) A substance characterizing wood cells and differing from cellulose in its conduct with certain chemical reagents.

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..

Caustic :: Caustic (a.) Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic..

Paramorphism :: Paramorphism (n.) The change of one mineral species to another, so as to involve a change in physical characters without alteration of chemical composition..

Neurine :: Neurine (n.) A poisonous organic base (a ptomaine) formed in the decomposition of protagon with boiling baryta water, and in the putrefraction of proteid matter. It was for a long time considered identical with choline, a crystalline body originally obtained from bile. Chemically, however, choline is oxyethyl-trimethyl-ammonium hydroxide, while neurine is vinyl-trimethyl-ammonium hydroxide..

Sequence :: Sequence (n.) Simple succession, or the coming after in time, without asserting or implying causative energy; as, the reactions of chemical agents may be conceived as merely invariable sequences..

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

Chemical :: Chemical (a.) Pertaining to chemistry; characterized or produced by the forces and operations of chemistry; employed in the processes of chemistry; as, chemical changes; chemical combinations..

Chromophore :: Chromophore (n.) Any chemical group or residue (as NO2; N2; or O2) which imparts some decided color to the compound of which it is an ingredient.

Force :: Force (n.) Any action between two bodies which changes, or tends to change, their relative condition as to rest or motion; or, more generally, which changes, or tends to change, any physical relation between them, whether mechanical, thermal, chemical, electrical, magnetic, or of any other kind; as, the force of gravity; cohesive force; centrifugal force..

Voltaism :: Voltaism (n.) That form of electricity which is developed by the chemical action between metals and different liquids; voltaic electricity; also, the science which treats of this form of electricity; -- called also galvanism, from Galvani, on account of his experiments showing the remarkable influence of this agent on animals..

Heat :: Heat (n.) A force in nature which is recognized in various effects, but especially in the phenomena of fusion and evaporation, and which, as manifested in fire, the sun's rays, mechanical action, chemical combination, etc., becomes directly known to us through the sense of feeling. In its nature heat is a mode if motion, being in general a form of molecular disturbance or vibration. It was formerly supposed to be a subtile, imponderable fluid, to which was given the name caloric..

Separation :: Separation (n.) Chemical analysis.

Anion :: Anion (n.) An electro-negative element, or the element which, in electro-chemical decompositions, is evolved at the anode; -- opposed to cation..

Develop :: Develop (v. t.) To cause to become visible, as an invisible or latent image upon plate, by submitting it to chemical agents; to bring to view..

Metastasis :: Metastasis (n.) The act or process by which matter is taken up by cells or tissues and is transformed into other matter; in plants, the act or process by which are produced all of those chemical changes in the constituents of the plant which are not accompanied by a production of organic matter; metabolism..

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..

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

Rancid :: Rancid (a.) Having a rank smell or taste, from chemical change or decomposition; musty; as, rancid oil or butter..

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