Definition of "center" in Anglais

noun

1. The point in the interior of a circle that is equidistant from all points on the circumference.

2. The point in the interior of a sphere that is equidistant from all points on the circumference.

3. The middle portion of something; the part well away from the edges.

4. (geometry) The point on a line that is midway between the ends.

5. (geometry) The point in the interior of any figure of any number of dimensions that has as its coordinates the arithmetic mean of the coordinates of all points on the perimeter of the figure (or of all points in the interior for a center of volume).

   • The centroid is one of the centres of a triangle

6. (geometry) A point on a triangle's plane that is in some sense in its middle.

   • There are several centers of a triangle such as its circumcenter, incenter, orthocenter and centroid.

7. A place, especially a building or complex, set aside for some specified function or activity.

   • shopping center, convention center, civic center, garment center, Lincoln Center for the Performing Arts, Rockefeller Center

8. (politics) The ensemble of moderate or centrist political parties.

9. The venue in which the head of government in a centralized state is situated.

10. A topic that is particularly important in a given context, the element in a subject of cognition, volition or discussion that is perceived as decisive.

    • the center of the controversy
    • the center of attention

11. (sports) A player in the middle of a playing area.

12. A certain mechanical implement functioning in the middle of a whole apparatus

13. (algebra, group theory, ring theory) The set of those elements (of a given algebraic structure) that commute with every other element, usually denoted Z(G). In the case of (semi-)groups, it is required that they commute under the (semi-)group operation; in the case of rings and (Lie) algebras, under multiplication (i.e. the bracket for Lie algebras)

adjective

1. Of, at, or related to a center.

verb

1. (transitive) To cause (an object) to occupy the center of an area.

   • ????, Matthew Prior, Celia to Damon Thy joys are centred all in me alone.
   • He centered the heading of the document.

2. (transitive) To cause (some attribute, such as a mood or voltage) to be adjusted to a value which is midway between the extremes.