Meaning: A coral reef off the southern coast of Florida. Classified under: Nouns denoting natural objects (not man-made) Synonyms: cay; Florida key; key. Hypernyms (cay is a kind of...): coral reef (a reef consisting of coral consolidated into limestone) Holonyms (cay is a part of...):
Causes. Fever occurs when an area in your brain called the hypothalamus (hi-poe-THAL-uh-muhs) â also known as your body's thermostat â shifts the set point of your normal body temperature upward.
Fever is a defensive measure of the body against the germs: the life cycles of the germs are disrupted when the body temperature rises. About 38 Â°C (100.4 F) degrees is called a low-grade fever, and above 39 Â°C (103 F) degrees is a high-grade fever. fever is when a person's body temperature is hotter than 37.5 degrees Celsius (99.5 Fahrenheit).