center (redirected from eructation center)

center, in politics, a party following a middle course. The term was first used in France in 1789, when the moderates of the National Assembly sat in the center of the hall. It can refer to a separate party in a political system, e.g., the Catholic Center party of imperial and Weimar Germany, or to the middle group of a party consisting of several ideological factions.

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centre (US), center

1. Geometry

a. the midpoint of any line or figure, esp the point within a circle or sphere that is equidistant from any point on the circumference or surface

b. the point within a body through which a specified force may be considered to act, such as the centre of gravity

2. the point, axis, or pivot about which a body rotates

3. Politics

a. a political party or group favouring moderation, esp the moderate members of a legislative assembly

b. (as modifier): a Centre-Left alliance

4. Physiol any part of the central nervous system that regulates a specific function

5. a bar with a conical point upon which a workpiece or part may be turned or ground

6. a punch mark or small conical hole in a part to be drilled, which enables the point of the drill to be located accurately

7. Basketball

a. the position of a player who jumps for the ball at the start of play

b. the player in this position

8. Archery

a. the ring around the bull's eye

b. a shot that hits this ring

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center [′sen·tər]

(industrial engineering)

A manufacturing unit containing a number of interconnected cells.

(mathematics)

The point that is equidistant from all the points on a circle or sphere.

The point (if it exists) about which a curve (such as a circle, ellipse, or hyperbola) is symmetrical.

The point (if it exists) about which a surface (such as a sphere, ellipsoid, or hyperboloid) is symmetrical.

For a regular polygon, the center of its circumscribed circle.

The subgroup consisting of all elements that commute with all other elements in a given group.

The subring consisting of all elementsasuch thatax=xafor allxin a given ring.

(optics)

To adjust the components of an optical system so that their centers of curvature lie on a common optical axis. Also known as square-on.

(statistics)

For a distribution, the expected value of any random variable which has the distribution.