lordosis
Medical term for excessive inward curvature of the spine, especially in the lower back. Used in clinical contexts.
Lordosis is a condition in which the lumbar spine curves excessively forward.
Kyphosis: excessive outward curvature of the spine, often in the upper back.
Scoliosis: sideways curvature of the spine.
Compound of 脊柱 (spine), 前 (front), 弯 (curve), and 症 (condition). The term is a direct medical compound describing the condition.