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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. ...

tritium

(Encyclopedia)tritium trĭtˈēəm [key], radioactive isotope of hydrogen with mass number 3. The tritium nucleus, called a triton, contains one proton and two neutrons. It has a half-life of 12.5 years and decays ...

acromegaly

(Encyclopedia)acromegaly ăkˌrōmĕgˈəlē [key], adult endocrine disorder resulting from hypersecretion of growth hormone produced by the pituitary gland. Since the bones cannot increase in length after full gro...

Hesburgh, Theodore Martin

(Encyclopedia)Hesburgh, Theodore Martin, 1917–2015, American educator and civil rights advocate, b. Syracuse, N.Y., grad. Pontifical Gregorian Univ. (1939), Catholic Univ. of America (Ph.D., 1945). A member of th...

Dwiggins, William Addison

(Encyclopedia)Dwiggins, William Addison, 1880–1956, American type designer, calligrapher, and book designer, b. Martinsville, Ohio. He attained prominence as an illustrator and commercial artist, and he brought t...

skin patch

(Encyclopedia)skin patch, transdermal patch, or transdermal delivery system, adhesive patch used to deliver a controlled dose of a drug through the skin over a period of time. A skin patch uses a special membrane ...

Young's modulus

(Encyclopedia)Young's modulus [for Thomas Young], number representing (in pounds per square inch or dynes per square centimeter) the ratio of stress to strain for a wire or bar of a given substance. According to Ho...

cataract

(Encyclopedia)cataract, in medicine, opacity of the lens of the eye, which impairs vision. In the young, cataracts are generally congenital or hereditary; later they are usually the result of degenerative changes b...

cloud computing

(Encyclopedia)cloud computing, the delivery of shared computing resources over a network in a manner that makes accessing and configuring those resources convenient and largely independent of the use of a required ...

stem

(Encyclopedia)stem, supporting structure of a plant, serving also to conduct and to store food materials. The stems of herbaceous and of woody plants differ: those of herbaceous plants are usually green and pliant ...