Source : Webster's Revised Unabridged Dictionary (1913)

Homocentric \Ho`mo*cen"tric\, a. [Gr. ?: ? the same + ? center:
   cf. F. homocentrique.]
   Having the same center.

Source : WordNet®

homocentric
     adj : having a common center; "concentric rings" [syn: {concentric},
            {concentrical}] [ant: {eccentric}]