Dictionary » F » Fever

Fever

Definition

noun, plural: fevers

(pathology) A febrile condition; an increase in body temperature that is higher than the normal, usually as caused by the body's response to a pyrogen inducing upward displacement of the set point of the hypothalamic thermoregulatory center

(pathology) A disease accompanying a rise in body temperature above the normal

(marine biology) A group of stingrays


Supplement

Fever in medicine and pathology pertains to the rise in body temperature above the normal and results from the host's natural response when infectious agents such as pathogenic bacteria and viruses invade the body tissues. Pyrogens released into the circulation act on the hypothalamic thermoregulatory center, increasing its set point. In humans, a body temperature that is greater than 37.5 or 38.3 °C (99.5 or 100.9 °F) is regarded as having a fever.


Word origin: Old English fēfor, from Latin febris (a fever), from ferveō (to be hot, burn, boil)

Synonym(s):

  • pyrexia (pathology)
  • febrile response (pathology)

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