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a
: the point around which a circle or sphere is described
broadly
: a point that is related to a geometrical figure in such a way that for any point on the figure there is another point on the figure such that a straight line joining the two points is bisected by the original point
called also center of symmetry
b
: the center of the circle inscribed in a regular (see regular entry 1 sense 3b) polygon
4
a
: a player occupying a middle position on a team: such as
(1)
: the football player in the middle of a line who passes the ball between his legs to a back to start a down
(2)
: the usually tallest player on a basketball team who usually plays near the basket
b
5
a
: either of two tapered rods which support work in a lathe or grinding machine and about or with which the work revolves
b
: a conical recess in the end of work (such as a shaft) for receiving such a center
centered; centering
ˈsen-t(ə-)riŋ
ˈse-nər-iŋ
4
a
: to pass (a ball or puck) from either side toward the middle of the playing area
b
: to hand or pass (a football) backward between one's legs to a back (see back entry 1 sense 3) to start a down
: to have a specified center : focus
The intransitive verb center is most commonly used with the prepositions in, on, at, and around. At appears to be favored in mathematical contexts; the others are found in a broad range of contexts. Center around, a standard idiom, has often been objected to as illogical. The logic on which the objections are based is irrelevant, since center around is an idiom and idioms have their own logic. Center on is currently more common in edited prose, and revolve around and similar verbs are available if you want to avoid center around.
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Merriam-Webster unabridged
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- Often used to describe “the march of time,” what does inexorable mean?


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