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distemper

(Encyclopedia)distemper, in veterinary medicine, highly contagious, catarrhal, often fatal disease of dogs. It also affects wolves, foxes, mink, raccoons, and ferrets. Distemper is caused by a filtrable virus that ...

abracadabra

(Encyclopedia)abracadabra ăbˌrəkədăbˈrə [key], magical formula used by the Gnostics (see Gnosticism) to invoke the aid of benevolent spirits to ward off disease and affliction. It is supposed to be derived f...

Hartford Foundation

(Encyclopedia)Hartford Foundation, fund established (1929) by retail food merchants John A. Hartford (1872–1951) and George L. Hartford (1864–1957) of the Great Atlantic and Pacific Tea Company (A&P) as a p...

nitric oxide

(Encyclopedia)nitric oxide or nitrogen monoxide, a colorless gas formed by the combustion of nitrogen and oxygen as given by the reaction: energy + N2 + O2 → 2NO; m.p. −163.6℃; b.p. −151.8℃. Nitric oxide ...

assassin bug

(Encyclopedia)assassin bug, common name for members of the family Reduviidae, one of the largest and most varied groups belonging to the order Hemiptera (suborder Heteroptera). Assassin bugs are generally brownish ...

serum sickness

(Encyclopedia)serum sickness, hypersensitive response that occurs after injection of a large amount of foreign protein. The condition is named for the serum taken from horses or other animals immunized against a pa...

virology

(Encyclopedia)virology, study of viruses and their role in disease. Many viruses, such as animal RNA viruses and viruses that infect bacteria, or bacteriophages, have become useful laboratory tools in genetic studi...

diphtheria

(Encyclopedia)diphtheria dĭfthērˈēə [key], acute contagious disease caused by Corynebacterium diphtheriae (Klebs-Loffler bacillus) bacteria that have been infected by a bacteriophage. It begins as a soreness o...

antioxidant

(Encyclopedia)antioxidant, substance that prevents or slows the breakdown of another substance by oxygen. Synthetic and natural antioxidants are used to slow the deterioration of gasoline and rubber, and such antio...

emphysema

(Encyclopedia)emphysema ĕmfĭsēˈmə [key], pathological or physiological enlargement or overdistention of the air sacs of the lungs. A major cause of pulmonary insufficiency in chronic cigarette smokers, emphyse...