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boiling point

(Encyclopedia) boiling point, temperature at which a substance changes its state from liquid to gas. A stricter definition of boiling point is the temperature at which the liquid and vapor (gas)…

price

(Encyclopedia) price, amount of money for which a unit of goods or services is exchanged. Price is equivalent to market value and may or may not measure the intrinsic value of the goods or services…

paleomagnetism

(Encyclopedia) paleomagnetism, study of the intensity and orientation of the earth's magnetic field as preserved in the magnetic orientation of certain minerals found in rocks formed throughout…

conjunction, in astronomy

(Encyclopedia) conjunction, in astronomy, alignment of two celestial bodies as seen from the earth. Conjunction of the moon and the planets is often determined by reference to the sun. When a body is…

cover crop

(Encyclopedia) cover crop, green temporary crop grown to prevent or reduce erosion and to improve the soil by building up its organic content. Green-manure crops, which are specifically grown for…

Geoffroy, Étienne François

(Encyclopedia) Geoffroy, Étienne FrançoisGeoffroy, Étienne Françoisātyĕnˈ fräNswäˈ zhôfrwäˈ [key], 1672–1731, French physician and chemist, also known as Geoffroy the Elder. He became a pharmacist in…

Honorius I

(Encyclopedia) Honorius IHonorius Ihōnôrˈēəs [key], pope (625–38), an Italian; successor of Boniface V. He showed great interest in the church in Spain and the British Isles, and he did a great deal…

identity theft

(Encyclopedia) identity theft, the use of one person's personal information by another to commit fraud or other crimes. The most common forms of identity theft occur when someone obtains another…

infectious canine hepatitis

(Encyclopedia) infectious canine hepatitis, acute viral disease of canines, especially dogs and foxes. The causative agent, an adenovirus, is not infectious to humans. In foxes the disease is…

Medea

(Encyclopedia) MedeaMedeamĭdēˈə [key], in Greek mythology, princess of Colchis, skilled in magic and sorcery. She fell in love with Jason and helped him, against the will of her father, Aeëtes, to…