You searched for: “more concentric”
concentric (adjective), more concentric, most concentric
1. Pertaining to circles, arcs, or other shapes that have the same center with the larger one completely surrounding the smaller ones.
2. Etymology: from Latin concentricus; from com-, "together" + centrum, "center".
This entry is located in the following units: centro-, centr-, centri-, kentro- (page 5) -ic (page 43)