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mining

(Encyclopedia)mining, extraction of solid mineral resources from the earth. These resources include ores, which contain commercially valuable amounts of metals, such as iron and aluminum; precious stones, such as d...

planetary system

(Encyclopedia)planetary system, a star and all the celestial bodies bound to it by gravity, especially planets and their natural satellites. Until the last decade of the 20th cent., the only planetary system known ...

salmon, in zoology

(Encyclopedia)salmon sămˈən [key], member of the Salmonidae, a family of marine fish that spawn in freshwater, including the salmons, the trouts, and the chars (subfamily Salmoninae), the whitefish and the cisco...

Mesopotamia

(Encyclopedia)Mesopotamia mĕsˌəpətāˈmēə [key] [Gr.,=between rivers], ancient region of Asia, the territory about the Tigris and Euphrates rivers, included in modern Iraq. The region extends from the Persian...

Magna Carta

(Encyclopedia)Magna Carta or Magna Charta [Lat., = great charter], the most famous document of British constitutional history, issued by King John at Runnymede under compulsion from the barons and the church in...

Mary, the mother of Jesus

(Encyclopedia)Mary, in the Bible, mother of Jesus. Christian tradition reckons her the principal saint, naming her variously the Blessed Virgin Mary, Our Lady, and Mother of God (Gr., theotokos). Her name is the He...

Mughal art and architecture

(Encyclopedia)Mughal art and architecture, a characteristic Indo-Islamic-Persian style that flourished on the Indian subcontinent during the Mughal empire (1526–1857). This new style combined elements of Islamic ...

heart, in anatomy

(Encyclopedia)CE5 Cross section of heart, with arrows indicating direction of blood flow heart, muscular organ that pumps blood to all parts of the body. The rhythmic beating of the heart is a ceaseless activit...

Francis, Saint

(Encyclopedia)Francis, Saint, or Saint Francis of Assisi əsēˈzē [key], 1182?–1226, founder of the Franciscans, one of the greatest Christian saints, b. Assisi, Umbria, Italy. Two years before his death (122...

James II, king of England, Scotland, and Ireland

(Encyclopedia)James II, 1633–1701, king of England, Scotland, and Ireland (1685–88); second son of Charles I, brother and successor of Charles II. James made an effort to restore himself by landing in Irel...