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nosebleed

(Encyclopedia) nosebleed, nasal hemorrhage occurring as the result of local injury or disturbance. Most nosebleeds are not serious and occur when one of the small veins of the septum (the partition…

Multilateral Investment Guarantee Agency

(Encyclopedia) Multilateral Investment Guarantee Agency (MIGA), specialized agency of the United Nations. Formed in 1988, with headquarters in Washington, D.C., it is a member of the World Bank Group…

cramp

(Encyclopedia) cramp, painful uncontrollable contraction of a muscle or group of muscles. The type that results from cold, strain, or disturbance of circulation (as experienced by swimmers) is eased…

heatstroke

(Encyclopedia) heatstroke, profound disturbance of the heat-regulating mechanism of the body, also known as sunstroke. It is characterized by extremely high body temperatures and sometimes by…

chorea

(Encyclopedia) choreachoreakərēˈə, kō– [key] or St. Vitus's dance, acute disturbance of the central nervous system characterized by involuntary muscular movements of the face and extremities. The…

migraine

(Encyclopedia) migrainemigrainemīˈgrān [key], headache characterized by recurrent attacks of severe pain, usually on one side of the head. It may be preceded by flashes or spots before the eyes or a…

gigantism

(Encyclopedia) gigantism, condition in which an animal or plant is far greater than normal in size. Plants are often deliberately bred to increase their size. However, among animals, gigantism is…

trachoma

(Encyclopedia) trachomatrachomatrəkōˈmə [key], infection of the mucous membrane of the eyelids caused by the bacterium Chlamydia trachomatis. Trachoma affects at least 86 million people worldwide. An…

riot, rout, and unlawful assembly

(Encyclopedia) riot, rout, and unlawful assembly, in law, varying degrees of concerted disturbance of the peace. At common law, an unlawful assembly is a gathering of at least three persons whose…

smell

(Encyclopedia) smell, sense that enables an organism to perceive and distinguish the odors of various substances, also known as olfaction. In humans, the organ of smell is situated in the mucous…