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Yggdrasill

(Encyclopedia)Yggdrasill ĭgˈdrəsĭl, yo͞ogˈ– [key], in Norse mythology, the great tree of the world. Its branches and roots extended through all the universe—the heavens, the earth, and the underworld. At ...

Albert I, Holy Roman Emperor

(Encyclopedia)Albert I, c.1250–1308, Holy Roman Emperor (1298–1308), son of Rudolf I. Albert was invested with Austria and Styria in 1282 by his father, who also hoped to secure the succession as king of the Ge...

Gloria in excelsis

(Encyclopedia)Gloria in excelsis ĕksĕlˈsĭs [key] [Lat.,=glory in the highest], the Angelic Hymn or greater doxology, ancient Christian hymn beginning, according to the Authorized Version, “Glory be to God on ...

rocket, in aeronautics

(Encyclopedia)CE5 Relative positions of the components of the Saturn V rocket, the U.S. space vehicle used in the moon missions rocket, any vehicle propelled by ejection of the gases produced by combustion of s...

Holy Roman Emperors (table)

(Encyclopedia)HOLY ROMAN EMPERORS(including dates of reign) Saxon dynasty Salian or Franconian dynasty Hohenstaufen dynasty and rivals Interregnum, 1254–73 Hapsburg, Luxemburg, and other dynasties ...

Ragnarok

(Encyclopedia)Ragnarok rägˈnərŏkˌ [key], in Norse mythology, the doom of the gods. According to prophecy the end of the world would follow a severe ice age, in which human civilization would be destroyed. Then...

Hecate

(Encyclopedia)Hecate hĕkˈətē, hĕkˈĭt [key], in Greek religion and mythology, goddess of ghosts and witchcraft. Originally she seems to have been an extremely powerful and benevolent goddess, identified with ...

Elysian fields

(Encyclopedia)Elysian fields ĭlĭzhˈēəm [key], in Greek religion and mythology, happy otherworld for heroes favored by the gods. Identified with the Fortunate Isles or Isles of the Blest, Elysium was situated i...

man, in anthropology and biology

(Encyclopedia)man: see anthropology; human evolution; race. ...

Severus (Flavius Valerius Severus), Roman emperor

(Encyclopedia)Severus (Flavius Valerius Severus), d. 307, Roman emperor (306–7). He participated with Galerius in an unsuccessful attempt to overthrow Maxentius. Surrendering to Maximian (father of Maxentius) at ...