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chloroplast

(Encyclopedia)chloroplast klōrˈəplăstˌ, klôrˈ– [key], a complex, discrete green structure, or organelle, contained in the cytoplasm of plant cells. Chloroplasts are reponsible for the green color of almost...

twilight

(Encyclopedia)twilight, period between sunset and total darkness or between total darkness and sunrise. Total darkness does not occur immediately when the sun sinks below the horizon because light from the sun that...

Charles III, king of Spain, and of Naples and Sicily

(Encyclopedia)Charles III, 1716–88, king of Spain (1759–88) and of Naples and Sicily (1735–59), son of Philip V and Elizabeth Farnese. Recognized as duke of Parma and Piacenza in 1731, he relinquished the duc...

lock, canal

(Encyclopedia)lock, canal, stretch of water enclosed by gates, one at each end, built into a canal or river for the purpose of raising or lowering a vessel from one water level to another. A lock may also be built ...

minimum wage

(Encyclopedia)minimum wage, lowest wage legally permitted in an industry or in a government or other organization. The goal in establishing minimum wages has been to assure wage earners a standard of living above t...

firing

(Encyclopedia)firing, process of treating clay or other plastic ceramic materials with heat to produce a hard, durable but brittle material such as pottery. Primitive potters baked their clay in an open fire, but f...

George VI, king of Great Britain and Ireland

(Encyclopedia)George VI (Albert Frederick Arthur George), 1895–1952, king of Great Britain and Northern Ireland (1936–52), second son of George V; successor of his elder brother, Edward VIII. He attended the ro...

living wage

(Encyclopedia)living wage, the hourly wage that, at a minimum, supports a standard of living above the poverty level in a given locality. It differs from the minimum wage, which often provides a less than adequate ...

quinoa

(Encyclopedia)quinoa kēnwäˈ [key], tall annual herb (Chenopodium quinoa) of the family Chenopodiaceae (goosefoot family), whose seeds have provided a staple food for peoples of the higher Andes since pre-Columbi...

Francis, French prince, duke of Alençon and Anjou

(Encyclopedia)Francis, 1554–84, French prince, duke of Alençon and Anjou; youngest son of King Henry II of France and Catherine de' Medici. Although ill-shapen, pockmarked, and endowed with a curiously formed no...