n the sudden occurrence of a violent discharge of steam and volcanic material. a volcanic eruption in which a stream of gas and ash is violently ejected to a height of several miles. the sudden giving off of energy.
Most people think of a normal body temperature as an oral temperature of 98.6Â°F (37Â°C) .This is an average of normal body temperatures. Your temperature may actually be 1Â°F (0.6Â°C) or more above or below 98.6Â°F (37Â°C) .he body is very good at keeping its temperature within a narrow, safe range in spite of large variations in temperatures outside the body. When you are too hot, the blood vessels in your skin expand (dilate) to carry the excess heat to your skin's surface.
Most people think a normal body temperature is an oral temperature (by mouth) of 37Â°C (98.6Â°F) . This is an average of normal body temperatures. Your normal temperature may actually be 0.6Â°C (1Â°F) or more above or below this. fever may occur as a reaction to: 1  Infection. 2  This is the most common cause of a fever. 3  Infections may affect the whole body or one body part. 4  Medicines. 5  These include antibiotics, narcotics, antihistamines, and many others. 6  This is called a drug fever.. 7  Medicines like antibiotics raise the body temperature directly.