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The rhythmical expansion or dilatation of the heart and arteries; -- correlative to systole, or contraction.

eactions or processes that diazo compounds, or their derivatives, shall be produced by chemical exchange or substitution.

and moisture; to expose to a gentle heat in a boiler or matrass, as a preparation for chemical operations.

Crystallization in two independent forms of the same chemical compound, as of calcium carbonate as calcite and aragonite.

Crystallizing under two forms fundamentally different, while having the same chemical composition.

m certain allyl derivatives. Though isomeric with benzine, it is very different in its chemical relations. Called also dipropinyl.

he reverse of assimilation; downward metabolism. The breaking down of already existing chemical compounds into simpler ones, sometimes called disassimilation. Martin.

rt, or the whole, of an animal or plant dissected so as to exhibit the structure; an anatomical so prepared. Dissection wound, a poisoned wound incurred during the dissection of a dead body.

Change of form by chemical agency; decomposition; resolution. The dissolution of the compound. South.

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

g divisions; graduating. Dividing engine, a machine for graduating circles (as for astronomical instruments) or bars (as for scales); also, for spacing off and cutting teeth in wheels. -- Dividing sinker. (Knitting Mach.). See under Sinker.

foretell by divination; to utter prognostications. The prophets thereof divine for money. Micah iii. 11.

An academical title, originally meaning a men so well versed in his department as to be qualified to teach it. Hence: One who has taken the highest degree conferred by a university or college, or has received a diploma of the highest degree; as, a doctor of divinity, of law, of medicine, of music, or of philosophy. Suc…

eater Dog, and the brightest star in the heavens; -- called also Canicula, and, in astronomical charts, a Canis Majoris. See Dog days.

An absorbent material; esp., in high explosives, the sawdust, infusorial earth, mica, etc., mixed with nitroglycerin to make a damp powder (dynamite, etc.) less dangerous to transport, and ordinarily explosive only by suitable fulminating caps.

To make a jest of; to set in a comical light. [R.] This drolling everything is rather fatiguing. W. D. Howells.

The quality of being droll; sportive tricks; buffoonery; droll stories; comical gestures or manners. The rich drollery of "She Stoops to Conquer." Macaulay.

mineral substance used in the composition of medicines; any stuff used in dyeing or in chemical operations. Whence merchants bring Their spicy drugs. Milton.

of two distinct constituents, themselves simple or complex, and possessed of opposite chemical or electrical affinities.

A unit of measure for dynamical effect or work; a foot pound. See Foot pound. Whewell.