Sacrum
The large heavy bone at the base of the spine, which is made up of fused sacral vertebrae. The sacrum is located in the vertebral column, between the lumbar vertebrae and the coccyx. It is roughly triangular in shape and makes up the back wall of the pelvis. The female sacrum is wider and less curved than the male.
The name comes from the Latin “os sacrum” (holy bone). Why it was sacred is matter of conjecture.
Read Also:
- SAD
Seasonal affective disorder.
- Saddle gall
A sore on a horse caused by an ill-fitting saddle. Also called a saddle sore.
- Saddle sore
1. Sore from riding on a saddle such as on a horse or bike. 2. A sore on a horse caused by an ill-fitting saddle. Also called saddle gall.
- Safe sex
Sexual practices that do not involve the exchange of bodily fluids, including blood, sperm, vaginal secretions, and saliva, to avoid AIDS and other sexually transmitted diseases. The term safe sex is generally used to mean sex without penetration or sex using condoms or other barrier measures with consistency.
- Saffir-Simpson hurricane scale
Winds greater than 155 mph (135 kt or 249 km/hr). Storm surge generally greater than 18 ft above normal. Complete roof failure on many residences and industrial buildings. Some complete building failures with small utility buildings blown over or away. All shrubs, trees, and signs blown down. Complete destruction of mobile homes. Severe and extensive […]