1. The quality or state of being concentric; the condition of having a common center.
Usage: Plural form of concentricity; Used in geometry, physics, and engineering contexts
2. Instances or examples of concentric arrangements or patterns.
Usage: Plural usage referring to multiple concentric structures or phenomena

Examples

• The concentricities of the tree rings revealed information about its age and growth patterns.
• Engineers must account for the concentricities of the cylindrical components to ensure proper alignment.
• The artist created a design based on the concentricities of nested circles.
• Astronomers study the concentricities of planetary orbits around the sun.
• The concentricities in the metal alloy affected its structural properties.