Definition

Noun: - The quality or state of having a common center: This refers to the geometric property where two or more shapes, most commonly circles, share the exact same central point.

Usage

The term is used primarily in technical, mathematical, and engineering contexts to describe precise alignment. It is an abstract noun describing a specific geometric relationship. - The machinist measured the concentricity of the two cylinders to ensure they were perfectly aligned. - A high degree of concentricity is crucial for the smooth operation of a rotating shaft within a bearing.

Advanced Usage

• "Concentricity tolerance": In engineering and manufacturing, this is a specified allowable deviation from perfect concentricity.
  • The blueprint calls for a concentricity tolerance of 0.01 millimeters.

Variants and Related Words

• Concentric (adj.): Having a common center. This is the adjective form.
  • The target was marked with concentric circles.
• Concentrically (adv.): In a concentric manner.
  • The layers of the material were arranged concentrically.

Synonyms

• Coaxiality: The condition of having the same axis. While closely related, coaxiality often refers to three-dimensional objects like cylinders, whereas concentricity is often used for two-dimensional shapes like circles.
• Alignment: A more general term for arranging things in a straight line or correct relative position, which can include concentricity.

Antonyms

• Eccentricity: The quality of being off-center or not having the same center.

Noun

1. the quality of having the same center (as circles inside one another)