centring

Collins
World English Dictionary
centre or (US) center (ˈsɛntə)
 
n
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.  a point, area, or part that is approximately in the middle of a larger area or volume
4.  a place at which some specified activity is concentrated: a shopping centre
5.  a person or thing that is a focus of interest
6.  a place of activity or influence: a centre of power
7.  a person, group, policy, or thing in the middle
8.  (usually capital) politics
 a.  a political party or group favouring moderation, esp the moderate members of a legislative assembly
 b.  (as modifier): a Centre-Left alliance
9.  physiol any part of the central nervous system that regulates a specific function: respiratory centre
10.  a bar with a conical point upon which a workpiece or part may be turned or ground
11.  a punch mark or small conical hole in a part to be drilled, which enables the point of the drill to be located accurately
12.  sport
 a.  a player who plays in the middle of the forward line
 b.  the act or an instance of passing the ball from a wing to the middle of the field, court, etc
13.  basketball
 a.  the position of a player who jumps for the ball at the start of play
 b.  the player in this position
14.  archery
 a.  the ring around the bull's eye
 b.  a shot that hits this ring
 
vb (often foll by on)
15.  to move towards, mark, put, or be at a centre
16.  (tr) to focus or bring together: to centre one's thoughts
17.  to have as a main point of view or theme: the novel centred on crime
18.  (tr) to adjust or locate (a workpiece or part) using a centre
19.  (intr; foll by on or round) to have as a centre
20.  (tr) sport to pass (the ball) into the middle of the field or court
 
[C14: from Latin centrum the stationary point of a compass, from Greek kentron needle, from kentein to prick]
 
center or (US) center
 
n
 
vb
 
[C14: from Latin centrum the stationary point of a compass, from Greek kentron needle, from kentein to prick]

Centre
 
n
1.  the Centre the sparsely inhabited central region of Australia
2.  a region of central France: generally low-lying; drained chiefly by the Rivers Loire, Loir, and Cher

centring or (US) centering (ˈsɛntrɪŋ)
 
n
a temporary structure, esp one made of timber, used to support an arch during construction
 
centering or (US) centering
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

centre
British spelling of center (q.v.); for suffix, see -re.
Online Etymology Dictionary, © 2010 Douglas Harper
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