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Specifically (Conic Sections), in the ellipse and hyperbola, a third proportional to any diameter and its conjugate, or in the parabola, to any abscissa and the corresponding ordinate.

which, by act of Parliament, railway companies are required to run for the conveyance of third-class passengers at a reduced rate. [Eng.]

e body upon a proposition; hence, adoption; enactment; as, the passage of the bill to its third reading was delayed. "The passage of the Stamp Act." D. Hosack. The final question was then put upon its passage. Cushing. In passage, in passing; cursorily. "These . . . have been studied but in passage." Bacon. -- Middle…

A follower of Paul of Samosata, a bishop of Antioch in the third century, who was deposed for denying the divinity of Christ.

th, and fourth; a perfect consonance; a 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,

those of the columns of the same order. In most cases the projection from the wall is one third of its width, or less.

e cone; resembling a pine cone. Pineal gland (Anat.), a glandlike body in the roof of the third ventricle of the vertebrate brain; -- called also pineal body, epiphysis, conarium. In some animals it is connected with a rudimentary eye, the so-called pineal eye, and in other animals it is supposed to be the remnant of a…

A disciple of Plotinus, a celebrated Platonic philosopher of the third century, who taught that the human soul emanates from the divine Being, to whom it reunited at death.

A writ issued in the third place, after two former writs have been disregarded. Mozley & W.

A lively Bohemian or Polish dance tune in 2-4 measure, with the third quaver accented. Polka jacket, a kind of knit jacket worn by women.

A transverse commisure in the posterior part of the roof of the third ventricle of the brain; the posterior cerebral commisure. B. G. Wilder.

e multiplication of a number into itself; as, a square is the second power, and a cube is third power, of a number.

A transverse commissure in the anterior part of the third ventricle of the brain; the anterior cerebral commissure.

ch, having generally a trochee in the first and the fourth foot, and an amphimacer in the third; -- applied also to a regular hexameter verse when so constructed as to be divisible into two portions of three feet each. Andrews.

ge III., to be such as shall at a temperature of 51º Fahrenheit weigh exactly the second, third, and fourth proof spirits respectively. -- Proof staff, a straight-edge used by millers to test the flatness of a stone. -- Proof stick (Sugar Manuf.), a rod in the side of a vacuum pan, for testing the consistency of the…

ntities such that the quotient of the first divided by the second is equal to that of the third divided by the fourth; -- called also geometrical proportion, in distinction from arithmetical proportion, or that in which the difference of the first and second is equal to the difference of the third and fourth.…

The third stomach of ruminants. See Manyplies.

rt, and pourparty.] I am forced to eat all the game of your purparties, as well as my own thirds. Walpole.

is the first quadrant; the upper left-hand part the second; the lower left-hand part the third; and the lower right-hand part the fourth quadrant.

he variables, and called quadric, cubic, quartic, etc., according as it is of the second, third, fourth, fifth, or a higher degree. These are further called binary, ternary, quaternary, etc., according as they contain two, three, four, or more variables; thus, the quantic is a binary cubic.