Webster's Dictionary, 1913

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Centenarian adjective Of or relating to a hundred years. -- noun A person a hundred years old.

Centenary adjective [ Latin centenarius , from centum a hundred.]
1. Relating to, or consisting of, a hundred.

2. Occurring once in every hundred years; centennial. " Centenary solemnities." Fuller.

Centenary noun ; plural Centenaries
1. The aggregate of a hundred single things; specifically, a century. "Every centenary of years." Hakewill.

2. A commemoration or celebration of an event which occurred a hundred years before.

Centennial adjective [ Latin centum a hundred + annus year.]
1. Relating to, or associated with, the commemoration of an event that happened a hundred years before; as, a centennial ode.

2. Happening once in a hundred years; as, centennial jubilee; a centennial celebration.

3. Lasting or aged a hundred years.

That opened through long lines
Of sacred ilex and centennial pines.
Longfellow.

Centennial noun The celebration of the hundredth anniversary of any event; a centenary. [ U. S.]

Centennial State Colorado; -- a nickname alluding to the fact that it was admitted to the Union in the centennial year, 1876.

Centennially adverb Once in a hundred years.

Center noun [ French centre , from Latin centrum , from round which a circle is described, from ... to prick, goad.]
1. A point equally distant from the extremities of a line, figure, or body, or from all parts of the circumference of a circle; the middle point or place.

2. The middle or central portion of anything.

3. A principal or important point of concentration; the nucleus around which things are gathered or to which they tend; an object of attention, action, or force; as, a center of attaction.

4. The earth. [ Obsolete] Shak.

5. Those members of a legislative assembly (as in France) who support the existing government. They sit in the middle of the legislative chamber, opposite the presiding officer, between the conservatives or monarchists, who sit on the right of the speaker, and the radicals or advanced republicans who occupy the seats on his left, See Right , and Left .

6. (Architecture) A temporary structure upon which the materials of a vault or arch are supported in position until the work becomes self-supporting.

7. (Mech.) (a) One of the two conical steel pins, in a lathe, etc., upon which the work is held, and about which it revolves. (b) A conical recess, or indentation, in the end of a shaft or other work, to receive the point of a center, on which the work can turn, as in a lathe.

» In a lathe the live center is in the spindle of the head stock; the dead center is on the tail stock. Planer centers are stocks carrying centers, when the object to be planed must be turned on its axis.

Center of an army , the body or troops occupying the place in the line between the wings. -- Center of a curve or surface (Geom.) (a) A point such that every line drawn through the point and terminated by the curve or surface is bisected at the point. (b) The fixed point of reference in polar coördinates. See Coördinates . -- Center of curvature of a curve (Geom.) , the center of that circle which has at any given point of the curve closer contact with the curve than has any other circle whatever. See Circle . -- Center of a fleet , the division or column between the van and rear, or between the weather division and the lee. -- Center of gravity (Mech.) , that point of a body about which all its parts can be balanced, or which being supported, the whole body will remain at rest, though acted upon by gravity. -- Center of gyration (Mech.) , that point in a rotating body at which the whole mass might be concentrated (theoretically) without altering the resistance of the intertia of the body to angular acceleration or retardation. -- Center of inertia (Mech.) , the center of gravity of a body or system of bodies. -- Center of motion , the point which remains at rest, while all the other parts of a body move round it. -- Center of oscillation , the point at which, if the whole matter of a suspended body were collected, the time of oscillation would be the same as it is in the actual form and state of the body. -- Center of percussion , that point in a body moving about a fixed axis at which it may strike an obstacle without communicating a shock to the axis. -- Center of pressure (Hydros.) , that point in a surface pressed by a fluid, at which, if a force equal to the whole pressure and in the same line be applied in a contrary direction, it will balance or counteract the whole pressure of the fluid.

Center, Centre intransitive verb [ imperfect & past participle Centered or Centred ; present participle & verbal noun Centering or Centring .]
1. To be placed in a center; to be central.

2. To be collected to a point; to be concentrated; to rest on, or gather about, as a center.

Where there is no visible truth wherein to center , error is as wide as men's fancies.
Dr. H. More.

Our hopes must center in ourselves alone.
Dryden.

Center, Centre transitive verb
1. To place or fix in the center or on a central point. Milton.

2. To collect to a point; to concentrate.

Thy joys are centered all in me alone.
Prior.

3. (Mech.) To form a recess or indentation for the reception of a center.

Center, Centre seal (Gas Manuf.) A compound hydraulic valve for regulating the passage of the gas through a set of purifiers so as to cut out each one in turn for the renewal of the lime.

Center, Centre punch (Mech.) (a) A punch for making indentations or dots in a piece of work, as for suspension between lathe centers, etc. (b) A punch for punching holes in sheet metal, having a small conical center to insure correct locating.

Centerbit, Centrebit noun An instrument turning on a center, for boring holes. See Bit , noun , 3.

Centerboard, Centreboard , noun (Nautical) A movable or sliding keel formed of a broad board or slab of wood or metal which may be raised into a water-tight case amidships, when in shallow water, or may be lowered to increase the area of lateral resistance and prevent leeway when the vessel is beating to windward. It is used in vessels of all sizes along the coast of the United States

Centerfire cartridge See under Cartridge .

Centering noun (Architecture) Same as Center , noun , 6. [ Written also centring .]

Centerpiece, Centrepiece noun An ornament to be placed in the center, as of a table, ceiling, atc.; a central article or figure.

Centesimal adjective [ Latin centesimus the hundredth, from centum a hundred: confer French centésimal .] Hundredth. -- noun A hundredth part.

The neglect of a few centesimals .
Arbuthnot.

Centesimation noun [ Latin centesimore to take out or select every hundredth, from centesimus hundredth.] (Mil.) The infliction of the death penalty upon one person in every hundred, as in cases of mutiny.

Centesimo (sĕn"tĕs"ĭ*mo) noun ; plural -mi (- mē). [ Italian & Spanish ] A copper coin of Italy and Spain equivalent to a centime.

Centesm (sĕn"tĕz'm) noun [ Latin centesima .] Hundredth.

Centiare noun [ French See Centare .] See centare .

Centicipitous adjective [ Latin centiceps , -cipitis ; centum a hunder + caput head.] Hundred-headed.

Centifidous adjective [ Latin centifidus ; centum + findere to split.] Divided into a hundred parts.

Centifolious adjective [ Latin centifolius ; centum + folium leaf.] Having a hundred leaves.

Centigrade adjective [ Latin centum a hundred + gradus degree: confer French centigrade .] Consisting of a hundred degrees; graduated into a hundred divisions or equal parts. Specifically: Of or pertaining to the centigrade thermometer; as, 10° centigrade (or 10° C. ).

Centigrade thermometer , a thermometer having the zero or 0 at the point indicating the freezing state of water, and the distance between that and the point indicating the boiling state of water divided into one hundred degrees. It is called also the Celsius thermometer , from Anders Celsius, the originator of this scale.

Centigram, Centigramme noun [ French centigramme ; centi- (L. centum ) + gramme . See Gram .] The hundredth part of a gram; a weight equal to .15432 of a grain. See Gram .

Centiliter, Centilitre noun [ French centilitre ; centi (L. centum ) + litre . See Liter .] The hundredth part of a liter; a measure of volume or capacity equal to a little more than six tenths (0.6102) of a cubic inch, or one third (0.338) of a fluid ounce.

Centiloquy noun [ Latin centum hundred + logui to speak.] A work divided into a hundred parts. [ R.] Burton.

Centime noun [ French, from Latin centesimus . See Centesimal .] (F. Coinage) The hundredth part of a franc; a small French copper coin and money of account.

Centimeter, Centimetre noun [ French centimètre ; centi- (L. centum ) + mètre . See Meter .] The hundredth part of a meter; a measure of length equal to rather more than thirty-nine hundredths (0.3937) of an inch. See Meter .

Centinel noun Sentinel. [ Obsolete] Sackville.

Centinody noun [ Latin centum a hundred + nodus knot: confer French centinode .] (Botany) A weed with a stem of many joints ( Illecebrum verticillatum ); also, the Polygonum aviculare or knotgrass.

Centiped noun [ Latin centipeda ; centum a hundred + pes , pedis , foot: confer French centipède .] (Zoology) A species of the Myriapoda ; esp. the large, flattened, venomous kinds of the order Chilopoda, found in tropical climates. they are many-jointed, and have a great number of feet. [ Written also centipede ]

Centistere noun [ French centistère ; centi- (l. centum ) + stère .] The hundredth part of a stere, equal to .353 cubic feet.

Centner noun [ Confer German centner a hundred-weight, from Latin centenarius of a hundred, from centum a hundred.]
1. (Metal. & Assaying) A weight divisible first into a hundred parts, and then into smaller parts.

» The metallurgists use a weight divided into a hundred equal parts, each one pound; the whole they call a centner : the pound is divided into thirty-two parts, or half ounces; the half ounce into two quarters; and each of these into two drams. But the assayers use different weights. With them a centner is one dram, to which the other parts are proportioned.

2. The commercial hundredweight in several of the continental countries, varying in different places from 100 to about 112 pounds.

Cento noun ; plural Centos . [ Latin cento a garment of several pieces sewed together, patchwork, a poem made up of various verses of another poem.] A literary or a musical composition formed by selections from different authors disposed in a new order.

Centonism noun The composition of a cento; the act or practice of composing a cento or centos.

Central adjective [ Latin centralis , from centrum : confer French central . See Center .] Relating to the center; situated in or near the center or middle; containing the center; of or pertaining to the parts near the center; equidistant or equally accessible from certain points.

Central force (Math.) , a force acting upon a body towards or away from a fixed or movable center. -- Center sun (Astron.) , a name given to a hypothetical body about which Mädler supposed the solar system together with all the stars in the Milky Way, to be revolving. A point near Alcyone in the Pleiades was supposed to possess characteristics of the position of such a body.

Central Cen*tra"le noun [ New Latin centrale , from Latin centralis .] (Anat.) The central, or one of the central, bones of the carpus or or tarsus. In the tarsus of man it is represented by the navicular.

Centralism noun
1. The state or condition of being central; the combination of several parts into one whole; centralization.

2. The system by which power is centralized, as in a government.

Centrality noun ; plural Centralities The state of being central; tendency towards a center.

Meantime there is a great centrality , a centripetence equal to the centrifugence.
R. W. Emerson.

Centralization noun [ Confer French centralisation .] The act or process of centralizing, or the state of being centralized; the act or process of combining or reducing several parts into a whole; as, the centralization of power in the general government; the centralization of commerce in a city.

Centralize transitive verb [ imperfect & past participle Centralized ; present participle & verbal noun Centralizing .] [ Confer French centraliser .] To draw or bring to a center point; to gather into or about a center; to bring into one system, or under one control.

[ To] centralize the power of government.
Bancroft.

Centrally adverb In a central manner or situation.

Centre noun & v. See Center .

Centric, Centrical adjective Placed in the center or middle; central.

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

-- Cen"tric*al*ly , adverb -- Cen"tric*al*ness , noun

Centricity noun The state or quality of being centric; centricalness.

Centrifugal adjective [ Latin centrum center + fugere to flee.]
1. Tending, or causing, to recede from the center.

2. (Botany) (a) Expanding first at the summit, and later at the base, as a flower cluster. (b) Having the radicle turned toward the sides of the fruit, as some embryos.

Centrifugal force (Mech.) , a force whose direction is from a center.

» When a body moves in a circle with uniform velocity, a force must act on the body to keep it in the circle without change of velocity. The direction of this force is towards the center of the circle. If this force is applied by means of a string to the body, the string will be in a state of tension. To a person holding the other end of the string, this tension will appear to be directed toward the body as if the body had a tendency to move away from the center of the circle which it is describing. Hence this latter force is often called centrifugal force . The force which really acts on the body being directed towards the center of the circle is called centripetal force , and in some popular treatises the centripetal and centrifugal forces are described as opposing and balancing each other. But they are merely the different aspects of the same stress. Clerk Maxwell.

Centrifugal impression (Physiol.) , an impression (motor) sent from a nerve center outwards to a muscle or muscles by which motion is produced. -- Centrifugal machine , A machine for expelling water or other fluids from moist substances, or for separating liquids of different densities by centrifugal action; a whirling table. -- Centrifugal pump , a machine in which water or other fluid is lifted and discharged through a pipe by the energy imparted by a wheel or blades revolving in a fixed case. Some of the largest and most powerful pumps are of this kind.

Centrifugal noun A centrifugal machine.