##  [Second Moment of Area](/second-moment-area) 

  ##  [Second Moment of Area](https://engineering.quantumdictionary.io/second-moment-area-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A geometric property of a plane area equal to the integral over the area of the square of the distance from a given axis (commonly denoted I); it quantifies a cross‑section's resistance to bending and appears in bending stiffness as EI and in curvature relations for linear‑elastic beams.