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insulin

(Encyclopedia)insulin, hormone secreted by the β cells of the islets of Langerhans, specific groups of cells in the pancreas. Insufficiency of insulin in the body results in diabetes. Insulin was one of the first ...

Annan, Kofi Atta

(Encyclopedia)Annan, Kofi Atta kōˈfē äˈtä ănˈən [key] 1938–2018, Ghanaian diplomat, the seventh secretary-general of the United Nations (1997–2006) and the first person to hold that office who came fro...

food preservation

(Encyclopedia)food preservation, methods of preparing food so that it can be stored for future use. Because most foods remain edible for only a brief period of time, people since the earliest ages have experimented...

liquid

(Encyclopedia)liquid, one of the three commonly recognized states in which matter occurs, i.e., that state, as distinguished from solid and gas, in which a substance has a definite volume but no definite shape. T...

lithography

(Encyclopedia)lithography lĭthŏgˈrəfē [key], type of planographic or surface printing. It is distinguished from letterpress (relief) printing and from intaglio printing (in which the design is cut or etched in...

photographic processing

(Encyclopedia)photographic processing, set of procedures by which the latent, or invisible, image produced when a photographic film is exposed to light is made into a permanent visible image. The negative may b...

sodium chloride

(Encyclopedia)sodium chloride, NaCl, common salt. Salt is important in many ways. It is an essential part of the diet of both humans and animals and is a part of most animal fluids, such as blood, sweat, and te...

dome

(Encyclopedia)CE5 Parts of a dome dome, a roof circular or (rarely) elliptical in plan and usually hemispherical in form, placed over a circular, square, oblong, or polygonal space. Domes have been built with a...

Francis

(Encyclopedia)Francis, 1936–, pope (2013–), an Argentinian (b. Buenos Aires to Italian immigrants) named Jorge Mario Bergoglio; successor of Benedict XVI. Francis, the first non-European to assume the papacy in...

Irish Land Question

(Encyclopedia)Irish Land Question, name given in the 19th cent. to the problem of land ownership and agrarian distress in Ireland under British rule. The long-term result of conquest, confiscation, and colonization...