Dissimilarity

Unlikene ; want of resemblance; incongruity; di imilitude. Di imilarly, adv. In a di imilar or opposite man IMG:content-0640.jpg:[blocks in formation] Di im'ulate, v . a . To di emble; to feign. (R.) Di imula'tion, n. [Fr.] Act of di embling; act of concealing something which exists; deceit; hypocrisy; simulation. Dis's ipable, a . Easily scattered or dispersed; liable to be di ipated or squandered; as, the di ipable heat of plants. Di ipate, v . a . [Lat. di ipo, di i patus -dis, and obsolete supo , to throw.] To spread abroad; to scatter; to disperse; to drive asunder; to dispel; as, to di i pate an illusory idea. - To scatter in wasteful extravagance; to squander; to spend profusely; to consume; as, to di ipate a fortune. -v. n. To scatter; to disperse; to separate into parts and A state of separation; disunion; want of amalgamation. (Chem.) By selecting a proper compound and heating it sufficiently, the distance between the molecules can be increased to such an extent that they will separate into their elementary condition. This is a spontaneous decomposition, not determined by any chemical action, and that to which Henri St. Claire-Deville, who discovered it in 1857, gave the name of Di ociation. Μ. Deville's law gives a rational explanation of the action of ma , i. e., to the action of two bodies which mutually chase each other from a compound, the one which is in exce taking the place of the other. M. Deville has been led to conclude, from his experiments, that in the decomposition of bodies by heat the phenomena are the same as in the vaporization of liquids. As the change of a liquid to the gaseous state requires a certain quantity of heat, which is entirely absorbed (be comes latent), so in the same manner a compound body, in order to be reduced to its elements, absorbs a quantity of heat equal to that which it disengages when it is recombined. Suppose, for example, that we heat the vapor of water to 120° C. in a large exce of chlorine (water being composed of oxygen and hydrogen), a small quantity of hydrogen and oxygen will be liberated. The free hydrogen has a tendency to combine either with the chlorine or the oxygen, but the oxygen being present in very feeble quantities, as compared with the chlorine, it is with the latter element that the greater part of the hydrogen will unite; if this proce be continued, as more water is destroyed than is reconstructed, in course of time the whole of the water will be transformed into hydrochloric acid. If, on the other hand, we heat hydro chlorine acid in a great exce of oxygen, the hydrogen di ociated from the acid will combine with the oxygen and the hydrochloric acid will be transformed into water and free chlorine. The phenomena are the same, but in an inverse order. - According to Dumas, the "phenomenon of Di ociation is one of the most important acquisitions, not only to chemistry but to natural philosophy, made in modern times. It has opened a new path to scientific research by intimately allying chemical decompositions to the purely physical phenomena of the formation of vapors; and a umes that there exists a tension of decomposition analogous to the tension of vapors, and that the evaporation of a liquid, or the decomposition of a carbonate, is effected by virtue of the same laws. What Dalton's law of the tension of vapors was to physics, is Deville's law of the tension of di ociation to chemistry." From experiments made in 1866, and published in 1867, it appears that the theory of di ociation is capable of extended application throughout the whole field of metallurgy. When better known, this theory will certainly receive extensive application in the reductions of bodies to their elementary conditions, in the preparation of pure gases, in metallurgical operations, . Some 30 years ago, in this country, the American geologist Sterry Hunt had recourse to Deville's theory in explanation of the origin of rocks, and the action of forces in primeval chemistry. Di olubility, n. Capacity of being di olved by heat or moisture; susceptibility of conversion into a fluid quality. Dis's oluble, a . [Fr., from Lat. di olubilis . See Dr SOLVE.] Susceptible of being di olved; that may be melted; having its parts liable to separation by heat or moisture; po e ing convertible power into a fluid state. -That may be disunited or separated. Dis's olublene , n. Di olubility. Dis's olute, a . [Lat. di olutus , from di olvo , See DISSOLVE.] Loose in behavior and morals: lax in principle; given to vice and di ipation; devoted to pleasure and sensual habits; disorderly: unrestrained; lewd; luxurious; licentious; debauched; as, a di olute life. Dis's olutely, adv . In a di olute manner; viciously; loosely. Dis's olutene , n. State or quality of being di olute; loosene of behavior and morals; vicious indulgence in pleasure, as in intemperance and debauchery, di ipation; as, di olutene of manners. Di olution, ( dis - so -lu's hun,) n. [Fr., from Lat dis solutio , from di olvo . See DISSOLVE.] Act of di olving or of separation of parts. - Act of liquefying or changing from a solid to a fluid state by heat or moisture; a melting; a thawing. - The resolution of a body into its constituent elements; decomposition; as, the di olution of a compound. - Death; separation of the soul and body. "The life of a man is always... declining towards di olution ." Raleigh. -Separation of the parts which compose a connected system or body; destruction; ruin; as, the di olution of an empire. The breaking up of an a ociation or a embly, or the putting an end to its existence; as, a di olution of Congre , a di olution of partnership. -State of undergoing liquefaction. "I am as subject to heat as butter; a man of continual di olu tion and thaw." - Shaks. -The substance, or product formed by di olving a body. "Di olve the iron in the aqua-fortis, and weigh the di olution." Bacon . IMG:content-0641.jpg:[blocks in formation] solved. coagulate. -0.2. To be melted or liquefied; to be resolved from a solid to a fluid state; as, wax di olves by heat. -To sink or vanish from sight; to full to nothing; to fade into oblivion; as, a di olving view. - To melt away in pleasure; to become soft or languid; as, di olved in bli . (Used in a figurative sense.) Di olvent, n. deter from. War...open or conceal'd, alike my voice di uades."-Milton.