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tree surgery

(Encyclopedia)tree surgery, practice of repairing damaged trees to restore their appearance and to arrest disease. Injured or diseased parts are first removed (even small cavities in the bark may harbor injurious f...

Richards, Dickinson Woodruff, Jr.

(Encyclopedia)Richards, Dickinson Woodruff, Jr., 1895–1973, American physician and physiologist, b. Orange, N.J., grad. Yale, 1917, M.D. Columbia, 1923. He joined the staff of the College of Physicians and Surgeo...

Windaus, Adolf

(Encyclopedia)Windaus, Adolf äˈdôlf vĭnˈdous [key], 1876–1959, German chemist. He was professor of chemistry and director of the chemistry laboratories at the Univ. of Göttingen (1915–44). For his researc...

bowlegs

(Encyclopedia)bowlegs (genu varum), outward curvature of the leg bone (tibia) or thighbone (femur) causing the knees to separate when the feet are placed together. When the condition is severe enough to be consider...

blackleg

(Encyclopedia)blackleg or black quarter, acute infectious disease of cattle, less often of sheep, caused by an organism of the genus Clostridium. It is characterized by inflammation of muscles with swelling and pai...

blight

(Encyclopedia)blight, general term for any sudden and severe plant disease or for the agent that causes it. The term is now applied chiefly to diseases caused by bacteria (e.g., bean blights and fire blight of frui...

monkeypox

(Encyclopedia)monkeypox, rare disease caused by infection with the monkeypox virus, which is related to the viruses that cause smallpox and cowpox. The symptoms of monkeypox, which typically take 1 to 2 weeks to ap...

glaucoma

(Encyclopedia)glaucoma glôkōˈmə [key], ocular disorder characterized by pressure within the eyeball caused by an excessive amount of aqueous humor (the fluid substance filling the eyeball). This causes pressure...

infant respiratory distress syndrome

(Encyclopedia)infant respiratory distress syndrome (IRDS) or hyaline membrane disease hīˈəlĭn, –līnˌ [key], respiratory distress syndrome of newborns, most common in infants born prematurely or by cesarean ...

housefly

(Encyclopedia)housefly, common name of the fly Musca domestica, found in most parts of the world. The housefly, a scavenger, does not bite living animals but is dangerous because it carries bacteria and protozoans ...