Having or containing the centre of something.
Being in the centre.
Exerting its action towards the peripheral organs.
Being very important, or key to something.
centre
Situated on the inside; that is within, inner; belonging to the inside.
Not superficially obvious, inner, not expressed, especially relating to mental or spiritual faculties as opposed to external ones.
Moving or tending toward the inside.
Towards the inside.
Towards one’s mind, thoughts, or internal self.