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A peculiar forcepslike organ which occurs in large numbers upon starfishes and echini. Those of starfishes have two movable jaws, or blades, and are usually nearly, or quite, sessile; those of echini usually have three jaws and a pedicel. See Illustration in Appendix.

al of construction, as cement, must be of a brand that has stood the test of a specified number of years' use in an important public work. [Cant, U. S.]

An instrument for including the number of steps in walking, and so ascertaining the distance passed over. It is usually in the form of a watch; an oscillating weight by the motion of the body causes the index to advance a certain distance at each step.

ximate to the smoothness in running of a wheel on a metal track. The tread consists of a number of rubber shod feet which are connected by ball-and-socket joints to the ends of sliding spokes. Each spoke has attached to it a small roller which in its turn runs under a short pivoted rail controlled by a powerful set of…

To poise or weight. [Obs.] Chaucer. Lest leaden slumber peise me down. Shak.

A number of lines that intersect in one point, the point of intersection being called the pencil point.

Expressing or suggesting thoughtfulness with sadness; as, pensive numbers. Prior.

hypothetical hydrocarbon, C5H10, metameric with the amylenes, and the nucleus of a large number of derivatives; -- so named because regarded as composed of five methylene residues. Cf. Trimethylene, and Tetramethylene.

Persons, generally; an indefinite number of men and women; folks; population, or part of population; as, country people; -- sometimes used as an indefinite subject or verb, like on in French, and man in German; as, people in adversity. People were tempted to lend by great premiums. Swift . People have lived twenty-four…

common chord in its original position of keynote, third, fifth, and octave. -- Perfect number (Arith.), a number equal to the sum of all its divisors; as, 28, whose aliquot parts, or divisors, are 14, 7, 4, 2,

A division of ungulate mammals, including those that have an odd number of toes, as the horse, tapir, and rhinoceros; -- opposed to Artiodactyla.

The arrangement of any determinate number of things, as units, objects, letters, etc., in all possible orders, one after the other; -- called also alternation. Cf. Combination, n., 4.

The number of years in which the simple interest of any sum becomes equal to the principal.

Inclined to pester. Also, vexatious; encumbering; burdensome. [Obs.] Bacon.

Fig.: That which is pestilent, noxious, or pernicious to the moral character of great numbers. I'll pour this pestilence into his ear. Shak. Pestilence weed (Bot.), the butterbur coltsfoot (Petasites vulgaris), so called because formerly considered a remedy for the plague. Dr. Prior.

A genus of fungi embracing a great number of species, some of which are remarkable for their regular cuplike form and deep colors.

machine for converting an alternating current into an alternating current of a different number of phases and the same frequency.

discovered by Prof. J. Willard Gibbs. It may be stated thus: The degree of variableness (number of degrees of freedom) of a system is equal to the number of components minus the number of phases, plus two. Thus, if the components be salt and water, and the phases salt, ice, saturated solution, and vapor, the system is…

radical (C6H5) regarded as the essential residue of benzene, and the basis of an immense number of aromatic derivatives. Phenyl hydrate (Chem.), phenol or carbolic acid. -- Phenyl hydrazine (Chem.), a nitrogenous base (C6H5.N2H3) produced artificially as a colorless oil which unites with acids, ketones, etc., to form…

A process in which, by means of a number of photographs simultaneously taken from different points of view on the same level, rough models of the figure or bust of a person or animal may be made with great expedition.