a. [ Gr. 'a priv. + &unr_; a point, a center. ] Not centered; without a center. [ 1913 Webster ]

adj. 1. having a subterminal centromere an acrocentric chromosome [ WordNet 1.5 ]

a. [ Gr. 'a`nqrwpos man + &unr_; center. ] Assuming man as the center or ultimate end; -- applied to theories of the universe or of any part of it, as the solar system. Draper. [ 1913 Webster ]

n. 1. an inclination to evaluate reality exclusively in terms of human values.
Syn. -- anthropocentrism. [ WordNet 1.5 ]

adj. 1. 1 relating to or affecting the atria and ventricles of the heart. atrioventricular disease
Syn. -- auriculoventricular. [ WordNet 1.5 ]

adj. (Med.) relating to or affecting the atria and ventricles of the heart.
Syn. -- atrioventricular. [ WordNet 1.5 ]

a. [ Gr. bary`s heavy + ke`ntron center. ] Of or pertaining to the center of gravity. See Barycentric calculus, under Calculus. [ 1913 Webster ]

{ } a. Placed in the center or middle; central; situated at or near a center. [ 1913 Webster ]

At York or some other centrical place. Sir W. Scott.

-- Cen"tric*al*ly, adv. -- Cen"tric*al*ness, n. [ 1913 Webster ]

n. The state or quality of being centric; centricalness. [ 1913 Webster ]

a. [ Christ + centric. ] Making Christ the center, about whom all things are grouped, as in religion or history; tending toward Christ, as the central object of thought or emotion. J. W. Chadwick. [ 1913 Webster ]

n. That which has a common center with something else. [ 1913 Webster ]

Its pecular relations to its concentrics. Coleridge. [ 1913 Webster ]

{ , a. [ F. concentrique. See Concenter. ] Having a common center, as circles of different size, one within another. [ 1913 Webster ]

Concentric circles upon the surface of the water. Sir I. Newton. [ 1913 Webster ]

Concentrical rings like those of an onion. Arbuthnot. [ 1913 Webster ]

adv. In a concentric manner. [ 1913 Webster ]

n. The state of being concentric. [ 1913 Webster ]

a. [ F. excentrique, formerly also spelled eccentrique, fr. LL. eccentros out of the center, eccentric, Gr. 'e`kkentros; 'ek out of + ke`ntron center. See Ex-, and Center, and cf. Excentral. ] 1. Deviating or departing from the center, or from the line of a circle; as, an eccentric or elliptical orbit; pertaining to deviation from the center or from true circular motion. [ 1913 Webster ]

2. Not having the same center; -- said of circles, ellipses, spheres, etc., which, though coinciding, either in whole or in part, as to area or volume, have not the same center; -- opposed to concentric. [ 1913 Webster ]

3. (Mach.) Pertaining to an eccentric; as, the eccentric rod in a steam engine. [ 1913 Webster ]

4. Not coincident as to motive or end. [ 1913 Webster ]

His own ends, which must needs be often eccentric to those of his master. Bacon. [ 1913 Webster ]

5. Deviating from stated methods, usual practice, or established forms or laws; deviating from an appointed sphere or way; departing from the usual course; irregular; anomalous; odd; as, eccentric conduct. “This brave and eccentric young man.” Macaulay. [ 1913 Webster ]

He shines eccentric, like a comet's blaze. Savage. [ 1913 Webster ]

Eccentric anomaly. (Astron.) See Anomaly. --
Eccentric chuck (Mach.), a lathe chuck so constructed that the work held by it may be altered as to its center of motion, so as to produce combinations of eccentric combinations of eccentric circles. --
Eccentric gear. (Mach.) (a) The whole apparatus, strap, and other parts, by which the motion of an eccentric is transmitted, as in the steam engine. (b) A cogwheel set to turn about an eccentric axis used to give variable rotation. --
Eccentric hook or
Eccentric gab, a hook-shaped journal box on the end of an eccentric rod, opposite the strap. --
Eccentric rod, the rod that connects an eccentric strap with any part to be acted upon by the eccentric. --
Eccentric sheave, or
Eccentric pulley, an eccentric. --
Eccentric strap, the ring, operating as a journal box, that encircles and receives motion from an eccentric; -- called also eccentric hoop.

Syn. -- Irregular; anomalous; singular; odd; peculiar; erratic; idiosyncratic; strange; whimsical. [ 1913 Webster ]

n. 1. A circle not having the same center as another contained in some measure within the first. [ 1913 Webster ]

2. One who, or that which, deviates from regularity; an anomalous or irregular person or thing. [ 1913 Webster ]

3. (Astron.) (a) In the Ptolemaic system, the supposed circular orbit of a planet about the earth, but with the earth not in its center. (b) A circle described about the center of an elliptical orbit, with half the major axis for radius. Hutton. [ 1913 Webster ]

4. (Mach.) A disk or wheel so arranged upon a shaft that the center of the wheel and that of the shaft do not coincide. It is used for operating valves in steam engines, and for other purposes. The motion derived is precisely that of a crank having the same throw. [ 1913 Webster ]

Back eccentric, the eccentric that reverses or backs the valve gear and the engine. --
Fore eccentric, the eccentric that imparts a forward motion to the valve gear and the engine. [ 1913 Webster ]

a. See Eccentric. [ 1913 Webster ]

adv. In an eccentric manner. [ 1913 Webster ]

Drove eccentrically here and there. Lew Wallace. [ 1913 Webster ]

n.; pl. Eccentricities [ Cf. F. excentricité. ] 1. The state of being eccentric; deviation from the customary line of conduct; oddity. [ 1913 Webster ]

2. (Math.) The ratio of the distance between the center and the focus of an ellipse or hyperbola to its semi-transverse axis. [ 1913 Webster ]

3. (Astron.) The ratio of the distance of the center of the orbit of a heavenly body from the center of the body round which it revolves to the semi-transverse axis of the orbit. [ 1913 Webster ]

4. (Mech.) The distance of the center of figure of a body, as of an eccentric, from an axis about which it turns; the throw. [ 1913 Webster ]

n. a self-centered person with little regard for others.
Syn. -- egoist. [ WordNet 1.5 ]

adj. having an attitude which is almost exclusively concerned with one's own needs or desires.
Syn. -- egoistical, self-centered, self-centred. [ WordNet 1.5 ]

v. t. [ Cf. OE. entriken to perplex, OF. entriquer. Cf. Trick, Intrigue. ] To trick, to perplex. [ Obs. ] Rom. of R. [ 1913 Webster ]

adj. centered on a specific ethnic group, usually one's own; exhibiting ethnocentrism (in both senses). [ WordNet 1.5 +PJC ]

{ } a. 1. Same as Eccentric, Eccentrical. [ 1913 Webster ]

2. (Bot.) One-sided; having the normally central portion not in the true center. Gray. [ 1913 Webster ]

(Math.) Same as Eccentricity. [ 1913 Webster ]

{ } a. [ Gr. ge`a, gh^, the earth + ke`ntron center: cf. F. géocentrique. ] (Astron.) (a) Having, considering, or based on, the earth as center; as, the geocentric theory of the universe; in relation to or seen from the earth, -- usually opposed to heliocentric, as seen from the sun; as, the geocentric longitude or latitude of a planet. [ 1913 Webster + Webster 1913 Suppl. ]

Geocentric latitude (of place) the angle included between the radius of the earth through the place and the plane of the equator, in distinction from geographic latitude. It is a little less than the geographic latitude. [ 1913 Webster ]

adv. In a geocentric manner. [ 1913 Webster ]

{ } a. [ Helio- + centric, centrical: cf. F. héliocentrique. ] (Astron.) pertaining to the sun's center, or appearing to be seen from it; having, or relating to, the sun as a center; -- opposed to geocentrical. [ 1913 Webster ]

Heliocentric parallax. See under Parallax. --
Heliocentric place,
latitude,
longitude, etc. (of a heavenly body), the direction, latitude, longitude, etc., of the body as viewed from the sun. [ 1913 Webster ]

a. [ Gr. &unr_;: &unr_; the same + &unr_; center: cf. F. homocentrique. ] Having the same center. [ 1913 Webster ]

a. (Anat.) Between the ventricles; as, the interventricular partition of the heart. [ 1913 Webster ]

a. Within or between ventricles. [ 1913 Webster ]

a. [ See Jove, and Center. ] (Astron.) Revolving around the planet Jupiter; appearing as viewed from Jupiter. [ R. ] J. R. Hind. [ 1913 Webster ]

adj. centered upon the mother. [ Narrower terms: matriarchal (vs. patriarchal) ] [ WordNet 1.5 ]

a. [ Neptune + centric. ] (Astron.) As seen from Neptune, or having Neptune as a center; as, Neptunicentric longitude or force. [ 1913 Webster ]

{ } a. [ Pref. para- + centric, -ical: cf. F. paracentrique. ] Deviating from circularity; changing the distance from a center. [ 1913 Webster ]

Paracentric curve (Math.), a curve having the property that, when its plane is placed vertically, a body descending along it, by the force of gravity, will approach to, or recede from, a fixed point or center, by equal distances in equal times; -- called also a paracentric. --
Paracentric motion or
Paracentric velocity, the motion or velocity of a revolving body, such as a planet, by which it approaches to, or recedes from, the center, without reference to its motion in space, or to its motion as reckoned in any other direction. [ 1913 Webster ]

adj. centered upon the father. [ WordNet 1.5 ]

n. (Anat.) Proventriculus. [ 1913 Webster ]

a. (Astron.) Appearing as if seen from the center of the planet Saturn; relating or referred to Saturn as a center. [ 1913 Webster ]

a. [ Gr. selh`nh the moon + E. centric. ] (Astron.) As seen or estimated from the center of the moon; with the moon central. [ 1913 Webster ]

n. [ L. ventriculus the stomach, a ventricle, dim. of venter the belly: cf. F. ventricule. See Ventral. ] 1. (Anat.) A cavity, or one of the cavities, of an organ, as of the larynx or the brain; specifically, the posterior chamber, or one of the two posterior chambers, of the heart, which receives the blood from the auricle and forces it out from the heart. See Heart. [ 1913 Webster ]

☞ The principal ventricles of the brain are the fourth in the medulla, the third in the midbrain, the first and second, or lateral, ventricles in the cerebral hemispheres, all of which are connected with each other, and the fifth, or pseudocœle, situated between the hemispheres, in front of, or above, the fornix, and entirely disconnected with the other cavities. See Brain, and Cœlia. [ 1913 Webster ]

2. The stomach. [ Obs. ] [ 1913 Webster ]

Whether I will or not, while I live, my heart beats, and my ventricle digests what is in it. Sir M. Hale. [ 1913 Webster ]

3. Fig.: Any cavity, or hollow place, in which any function may be conceived of as operating. [ 1913 Webster ]

These [ ideas ] are begot on the ventricle of memory. Shak. [ 1913 Webster ]

{ } a. [ NL. ventricosus, fr. L. venter belly. ] (Nat. Hist.) Swelling out on one side or unequally; bellied; ventricular; as, a ventricose corolla. [ 1913 Webster ]

Ventricose shell. (Zool.) (a) A spiral shell having the body whorls rounded or swollen in the middle. (b) A bivalve shell in which the valves are strongly convex. [ 1913 Webster ]

a. [ Cf. F. ventriculaire. ] Of or pertaining to a ventricle; bellied. [ 1913 Webster ]

‖n. [ See Ventriculus. ] (Paleon.) Any one of numerous species of siliceous fossil sponges belonging to Ventriculites and allied genera, characteristic of the Cretaceous period. [ 1913 Webster ]

☞ Many of them were shaped like vases, others like mushrooms. They belong to the hexactinellids, and are allied to the Venus's basket of modern seas. [ 1913 Webster ]

a. [ L. ventriculosus of the belly. ] Somewhat distended in the middle; ventricular. [ 1913 Webster ]

‖n.; pl. Ventriculi [ L., belly, dim. fr. venter belly. ] (Zool.) (a) One of the stomachs of certain insects. (b) The body cavity of a sponge. [ 1913 Webster ]