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; any figure having five angles. Regular pentagon, a pentagon in which the angles are all equal, and the sides all equal.

Fully equal. [Obs.] Chaucer. "Peregal to the best." Spenser.

inal 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 line or plane falling at right angles on another line or surface, or making equal angles with it on each side.

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

A Spanish silver coin, and money of account, equal to about nineteen cents, and divided into 100 centesimos.

A Spanish dollar; also, an Argentine, Chilian, Colombian, etc., coin, equal to from 75 cents to a dollar; also, a pound weight.

pe (Locomotives), a short, flaring pipe surrounding the blast nozzle in the smoke box, to equalize the draft.

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 invariant, that is, there is only one set of…

A piece of metal or wood, forming a support to equalize pressure; a brass; a pillow block. [R.]

A measure of capacity, equal to half a quart, or four gills, -- used in liquid and dry measures. See Quart.

Open; clear; unencumbered; equal; fair. Our troops beat an army in plain fight. Felton.

To make smooth; to level; to pare off the inequalities of the surface of, as of a board or other piece of wood, by the use of a plane; as, to plane a plank.

The state of being balanced by equal weight or power; equipoise; balance; equilibrium; rest. Bentley.

Polar circles (Astron. & Geog.), two circles, each at a distance from a pole of the earth equal to the obliquity of the ecliptic, or about 23º 28', the northern called the arctic circle, and the southern the antarctic circle. -- Polar clock, a tube, containing a polarizing apparatus, turning on an axis parallel to tha…

A measuring stick; also, a measure of length equal to 5 Bacon. Pole bean (Bot.), any kind of bean which is customarily trained on poles, as the scarlet runner or the Lima bean. -- Pole flounder (Zoöl.), a large deep-water flounder (Glyptocephalus cynoglossus), native of the northern coasts of Europe and America, and m…

purposes of taxation; to enumerate one by one. Polling the reformed churches whether they equalize in number those of his three kingdoms. Milton.

Composition in mutually related, equally important parts which share the melody among them; contrapuntal composition; -- opposed to homophony, in which the melody is given to one part only, the others filling out the harmony. See Counterpoint.

ned from an expenditure of one hundred kilogram-meters of energy per second. One poncelet equals g watts, when g is the value of the acceleration of gravity in centimeters.

A Russian weight, equal to forty Russian pounds or about thirty-six English pounds avoirdupois.