CENTER

I. noun Etymology: Middle English centre, from Middle French, from Latin centrum, from Greek kentron sharp point, ~ of a circle, from kentein to prick; probably akin to Old High German hantag pointed Date: 14th century 1. the point around which a circle or sphere is described, the ~ of the circle inscribed in a regular polygon, 2. a point, area, person, or thing that is most important or pivotal in relation to an indicated activity, interest, or condition , a source from which something originates , a group of nerve cells having a common function , a region of concentrated population , a facility providing a place for a particular activity or service , 3. the middle part (as of the forehead or a stage), b. often capitalized a grouping of political figures holding moderate views especially between those of conservatives and liberals, the views of such politicians, the adherents of such views, 4. a player occupying a middle position on a team: as, the football player in the middle of a line who passes the ball between his legs to a back to start a down, the usually tallest player on a basketball team who usually plays near the basket, ~ field , 5. either of two tapered rods which support work in a lathe or grinding machine and about or with which the work revolves, a conical recess in the end of work (as a shaft) for receiving such a ~, ~less adjective II. verb (~ed; ~ing) Date: 1590 transitive verb to place or fix at or around a ~ or central area or position , to give a central focus or basis , to adjust (as lenses) so that the axes coincide, 4. to pass (a ball or puck) from either side toward the middle of the playing area, to hand or pass (a football) backward between one's legs to a back to start a down, to play ~ on , intransitive verb to have a specified ~ ; focus , Usage: The intransitive verb ~ 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 ~ 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 ~ around.