the GNU version of the Collaborative International Dictionary of English
adj. Having the same center.
The Century Dictionary and Cyclopedia
Concentric.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. having a common center
Word Usage
"Peuerbach is also noted for his great attempt to reconcile the opposing thoeries of the universe, the so-called homocentric speres of Eudoxus and Aristotle, with Ptolemy's epicyclic trains."