at the center of things

: the point around which a circle or sphere is described

: the center of the circle inscribed in a regular (see ¹regular 2b) polygon

: a point, area, person, or thing that is most important or pivotal in relation to an indicated activity, interest, or condition

: to place or fix at or around a center or central area

: to give a central focus or basis

: to adjust (things, such as lenses) so that the axes coincide

: an object or entity not precisely designated or capable of being designated

: an inanimate object distinguished from a living being

: a separate and distinct individual quality, fact, idea, or usually entity