Category: W

Methyl salicylate. This colorless, yellowish, or reddish liquid has a characteristic taste and odor. It is used as a flavoring substance and as a counterirritant applied topically in the form of salves, lotions, and ointments.  

The brief, voluntary closure of one eye. In hemiplegia, the patient may not be able to blink or close the eye on the paralyzed side without simultaneously closing the other eye. This is called Revilliod sign or orbicularis sign.  

Slang term for a superficial infected area of the skin seen in alcoholics with poor personal hygiene; erroneously thought to be due to specific action of the wine.  

In digital imaging, the number of shades of gray in an image.  

In digital imaging, including computed tomography, the center of the range of gray scale in the image.  

Loss of heat from exposure of skin to wind. Heat loss is proportional to the speed of the wind. Thus, skin exposed to a wind velocity of 20 mph (32 km/hr) when the temperature is 0°F (— 17.8°C) is cooled at the same rate as in still air at — 46°F (-43.3°C). Similarly, when the…

The cooling effect wind has on exposed human skin. The effect is intensified if the skin is moist or wet.  

A so-called pulmonary dysmaturity syndrome seen in premature infants. The symptoms are insidious onset of dyspnea, tachypnea, and cyanosis in the first month of life. Radiographs of the lungs reveal evidence of emphysema that develops into multicysts. Therapy is directed at the pulmonary insufficiency and cardiac failure. The death rate is about 25%.  

One of the cords crossing the superior longitudinal sinus transversely.    

A genus of mycolic acid containing actinomycetes. Most members of the genus are thought to be nonpathogenic bacteria found in a variety of natural environments. They have rarely been identified in culture specimens as a cause of human disease.