concavity
/kɒnˈkævɪti/Definitions
1. noun
A curving inward of the surface of a solid or a curve, especially one that is a part of a larger surface or curve.
“The architect studied the concavity of the dome to ensure its structural integrity.”
2. noun
A hollow or depression in the surface of something, especially the body of a person or animal.
“The doctor examined the patient’s concavity in her lower back to determine the cause of the pain.”
3. noun
A mathematical concept describing the shape of a curve or surface.
“The mathematician studied the concavity of the function to understand its behavior.”