Category: S

An organic compound of the general formula S020H derived from sulfuric acid by replacement of a hydrogen atom.  

A spasm of the ciliary muscle, usually the result of excessive strain from overuse; it is common in myopia.  

The rate of change in velocity of a freely falling body as it is acted on by gravity to travel to the earth. It is 9.81 m (or 32.17 ft)/sec².  

Infection of hair follicles with Demodex folliculorum.  

Infestation with a burrowing mite, Sarcoptes scabiei, which deposits its eggs in the burrows.  

The uptake of water, fatty acids, monosaccharides, amino acids, vitamins, and minerals from the lumen of the gut into the capillary networks and lacteals of the villi. The small intestine is the major site of nutrient absorption in the body.  

Abortion in which there is an infection of the products of conception and the endometrial lining of the uterus. A post-miscarriage or abortion infection can occur in the uterus, affecting any remaining fetal or placental tissue. This condition is marked by symptoms such as fever, abdominal discomfort, and a vaginal discharge that might include blood.…

Aberration or distortion of an image due to rays entering the peripheral portion of a spherical mirror or lens being refracted differently from those closer to the center. Thus the peripheral rays are focused on the optical axis at a different point from the central rays.  

An abdomen that on examination appears hollowed, sunken, or emaciated. A sunken, concave abdomen, often attributed to factors like malnutrition or serious illness.  

Malformed extra teeth are frequently found, particularly in the upper incisor region. They often do not erupt, but prevent the eruption of the permanent teeth. A tooth that is extra beyond the usual number of teeth.