Lacking wings or wing-like structures.

Having a downward angle; not upward sloping.

Referring to crystals with negative angles between faces.

**Anhedral Angle**: An angle of less than 180 degrees.

**Anhedral Wing**: A wing configuration angled downward from the body.

**Anhedral Shape**: A shape that is concave or lower at edges.

**Anhedral Structure**: Architectural design with sloping surfaces downwards.