Definition of diameter

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Diameter (n.) Any right line passing through the center of a figure or body, as a circle, conic section, sphere, cube, etc., and terminated by the opposite boundaries; a straight line which bisects a system of parallel chords drawn in a curve..

Lern More About Diameter

Tower :: Tower (n.) A mass of building standing alone and insulated, usually higher than its diameter, but when of great size not always of that proportion..
Sun :: Sun (n.) The luminous orb, the light of which constitutes day, and its absence night; the central body round which the earth and planets revolve, by which they are held in their orbits, and from which they receive light and heat. Its mean distance from the earth is about 92,500,000 miles, and its diameter about 860,000..
Diametral :: Diametral (n.) A diameter.
Mars :: Mars (n.) One of the planets of the solar system, the fourth in order from the sun, or the next beyond the earth, having a diameter of about 4,200 miles, a period of 687 days, and a mean distance of 141,000,000 miles. It is conspicuous for the redness of its light..
Diameter :: Diameter (n.) A diametral plane.
Adopter :: Adopter (n.) A receiver, with two necks, opposite to each other, one of which admits the neck of a retort, and the other is joined to another receiver. It is used in distillations, to give more space to elastic vapors, to increase the length of the neck of a retort, or to unite two vessels whose openings have different diameters..
Oppositifolious :: Oppositifolious (a.) Placed at the same node with a leaf, but separated from it by the whole diameter of the stem; as, an oppositifolious peduncle..
Semicircle :: Semicircle (n.) The half of a circle; the part of a circle bounded by its diameter and half of its circumference.
Radius :: Radius (n.) A right line drawn or extending from the center of a circle to the periphery; the semidiameter of a circle or sphere.
Digit :: Digit (n.) One twelfth part of the diameter of the sun or moon; -- a term used to express the quantity of an eclipse; as, an eclipse of eight digits is one which hides two thirds of the diameter of the disk..
Depressed :: Depressed (a.) Having the vertical diameter shorter than the horizontal or transverse; -- said of the bodies of animals, or of parts of the bodies..
Opposite :: Opposite (a.) Set over against each other, but separated by the whole diameter of the stem, as two leaves at the same node..
Trunk :: Trunk (n.) A large pipe forming the piston rod of a steam engine, of sufficient diameter to allow one end of the connecting rod to be attached to the crank, and the other end to pass within the pipe directly to the piston, thus making the engine more compact..
Apparent :: Apparent (a.) Appearing to the eye or mind (distinguished from, but not necessarily opposed to, true or real); seeming; as the apparent motion or diameter of the sun..
Ovaliform :: Ovaliform (a.) Having the form of an egg; having a figure such that any section in the direction of the shorter diameter will be circular, and any in the direction of the longer diameter will be oval..
Diametrical :: Diametrical (a.) As remote as possible, as if at the opposite end of a diameter; directly adverse..
Parameter :: Parameter (n.) 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..
Power :: Power (n.) The degree to which a lens, mirror, or any optical instrument, magnifies; in the telescope, and usually in the microscope, the number of times it multiplies, or augments, the apparent diameter of an object; sometimes, in microscopes, the number of times it multiplies the apparent surface..
Telemeter :: Telemeter (n.) An instrument used for measuring the distance of an object from an observer; as, a telescope with a micrometer for measuring the apparent diameter of an object whose real dimensions are known..
Discolith :: Discolith (n.) One of a species of coccoliths, having an oval discoidal body, with a thick strongly refracting rim, and a thinner central portion. One of them measures about / of an inch in its longest diameter..
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