Centrality n. (pl. centralities) The state of being central; tendency towards a center. "Meantime there is a great centrality, a centripetence equal to the centrifugence."
... a revelation too great to be credited by mankind. It was opposed to the doctrine of the centrality of the Earth, for it suggested that other worlds constituted like ours ... — The Birth-Time of the World and Other Scientific Essays • J. (John) Joly