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Doctrine of Signatures

(Encyclopedia)Doctrine of Signatures, the concept that the key to humanity's use of various plants was indicated by the form of the plant. The red sap of the bloodroot (Sanguinaria canadensis), for instance, was be...

Abel, John Jacob

(Encyclopedia)Abel, John Jacob, 1857–1938, American pharmacologist, b. Cleveland, grad. Univ. of Michigan, 1883, M.D. Univ. of Strasbourg, 1888. Professor of pharmacology (1893–1932) and director of the laborat...

pus

(Encyclopedia)pus, thick white or yellowish fluid that forms in areas of infection such as wounds and abscesses. It is constituted of decomposed body tissue, bacteria (or other micro-organisms that cause the infect...

medical jurisprudence

(Encyclopedia)medical jurisprudence or forensic medicine, the application of medical science to legal problems. It is typically involved in cases concerning blood relationship, mental illness, injury, or death resu...

mustang

(Encyclopedia)mustang [Sp. mesteño=a stray], small feral horse of the W United States. Mustangs are descended from escaped Native American horses, which in turn were descended from horses of North African blood, b...

DeBakey, Michael Ellis

(Encyclopedia)DeBakey, Michael Ellis dəbāˈkē [key], 1908–2008, American surgeon, b. Lake Charles, La. While still at Tulane medical school (M.D., 1932), DeBakey developed the roller pump, which later became a...

tinnitus

(Encyclopedia)tinnitus, the hearing of sounds in the absence of any external sound, also known as ringing in the ears. The sounds may be perceived as hissing, whistling, buzzing, swooshing, roaring, or clicking in ...

absorption

(Encyclopedia)absorption [Lat.,=sucking from], taking of molecules of one substance directly into another substance. It is contrasted with adsorption, in which the molecules adhere only to the surface of the second...

die-casting

(Encyclopedia)die-casting, process by which molten metal is forced by a plunger or compressed air into a metallic die and the pressure maintained until the metal has solidified. Die castings are accurate, are sharp...

sciatica

(Encyclopedia)sciatica sīătˈĭkə [key], severe pain in the leg along the sciatic nerve and its branches. It may be caused by injury or pressure to the base of the nerve in the lower back, or by metabolic, toxic...