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navigable water

(Encyclopedia)navigable water, in the broadest sense, a stream or body of water that can be used for commercial transportation. When, as in the early common law, the term is restricted to waters affected by tides, ...

chemical analysis

(Encyclopedia)chemical analysis, the study of the chemical composition and structure of substances. More broadly, it may be considered the corpus of all techniques whereby any exact chemical information is obtained...

devaluation

(Encyclopedia)devaluation, decreasing the value of one nation's currency relative to gold or the currencies of other nations. It is usually undertaken as a means of correcting a deficit in the balance of payments. ...

Great Dane

(Encyclopedia)Great Dane, breed of very large, powerful working dog developed in Europe more than 400 years ago. It may stand as high as 36 in. (91.4 cm) at the shoulder and weigh up to 150 lb (68.1 kg). Its short,...

probate

(Encyclopedia)probate prōˈbāt [key], in law, the certification by a court that a will is valid. Probate, which is governed by various statutes in the several states of the United States, is required before the w...

Gamelin, Maurice Gustave

(Encyclopedia)Gamelin, Maurice Gustave môrēsˈ güstävˈ gäməlăNˈ [key], 1872–1958, French army officer. During World War I he served on General Joffre's staff and as a division commander. He was made chie...

iron lung

(Encyclopedia)iron lung, device used to maintain artificial respiration over an extended period of time. Before the successful vaccination program against poliomyelitis, it was used mostly in treatment of that dise...

irritable bowel syndrome

(Encyclopedia)irritable bowel syndrome (IBS), condition characterized by constipation, diarrhea, or alternating constipation and diarrhea in the absence of any disease process. It is usually accompanied by abdomina...

electric shock

(Encyclopedia)electric shock, effect of the passage of a current of electricity through the body. Fatality may result from shocks of from 1 to 2 amperes and 500 to 1,000 volts. However, the effect of electric shock...

embolus

(Encyclopedia)embolus ĕmˈbələs [key], foreign matter circulating in and obstructing a blood vessel. It may be a portion of a clot that has separated from the wall of a vessel (see thrombosis), a bubble of gas o...