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Any one point or portion in a recurring series of changes, as in the changes of motion of one of the particles constituting a wave or vibration; one portion of a series of such changes, in distinction from a contrasted portion, as the portion on one side of a position of equilibrium, in contrast with that on the opposi…

Any one of the series of hydroxyl derivatives of which phenol proper is the type. Glacial phenol (Chem.), pure crystallized phenol or carbolic acid. -- Phenol acid (Chem.), any one of a series of compounds which are at once derivatives of both phenol and some member of the fatty acid series; thus, salicylic acid is a…

Any one of the series of famous orations of Demosthenes, the Grecian orator, denouncing Philip, king of Macedon.

hich is the most highly oxidized acid of phosphorus, and forms an important and extensive series of compounds, viz., the phosphates. -- Soluble phosphoric acid, Insoluble phosphoric acid (Agric. Chem.), phosphoric acid combined in acid salts, or in neutral or basic salts, which are respectively soluble and insoluble i…

A device, consisting essentially of an electric arc and a camera, by which a series of photographs of the variations of the arc due to sound waves are obtained for reproduction by means of a selenium cell and a telephone.

One of a series of artificial organic dyes made as condensation products of the phenols with phthalic acid, and well represented by phenol phthaleïn. Their alkaline solutions are fluorescent. Phenol phthalein, a white or yellowish white crystalline substance made from phthalic acid and phenol. Its solution in alkalies…

phthalyl chloride, as a white crystalline substance; hence, by extension, any one of the series of which phthalide proper is the type. [Written also phthalid.]

substance, C6H4.(CO)2NH, which has itself (like succinimide) acid properties, and forms a series of salts. Cf. Imido acid, under Imido.

ion from phthaleïn, into which it is easily converted by oxidation; hence, any one of the series of which phthalin proper is the type.

An order of Siphonophora, furnished with an air sac, or float, and a series of nectocalyces. See Illust. under Nectocalyx.

from other things of the same kind; an individual article; a distinct single effort of a series; a definite performance; especially:

A vertical series of alternate disks of two dissimilar metals, as copper and zinc, laid up with disks of cloth or paper moistened with acid water between them, for producing a current of electricity; -- commonly called Volta's pile, voltaic pile, or galvanic pile.

A series of piles; piles considered collectively; as, the piling of a bridge. Pug piling, sheet piles connected together at the edges by dovetailed tongues and grooves. -- Sheet piling, a series of piles made of planks or half logs driven edge to edge, -- used to form the walls of cofferdams, etc.

tones, and obtained by the decomposition of pinacone; hence, by extension, any one of the series of which pinacolin proper is the type. [Written also pinacoline.]

ubstance related to the glycols, and made from acetone; hence, by extension, any one of a series of substances of which pinacone proper is the type. [Written also pinakone.]

Any one of a series of small, slender organs, or parts, when arranged in rows so as to have a plumelike appearance; as, a pinnule of a gorgonia; the pinnules of a crinoid.

The act of laying planks; also, planks, collectively; a series of planks in place, as the wooden covering of the frame of a vessel.

oot, stem, and leaves, though consisting sometimes only of a single leafy expansion, or a series of cellules, or even a single cellule.

Any exercise, or series of actions, intended for amusement or diversion; a game. John naturally loved rough play. Arbuthnot.

Consisting of several tone series, or melodic parts, progressing simultaneously according to the laws of counterpoint; contrapuntal; as, a polyphonic composition; -- opposed to homophonic, or monodic.