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Stephen Dušan

(Encyclopedia)Stephen Dušan or Dushan both: stĕˈfän do͞oˈshän [key], c.1308–1355, king (1331–46) and czar (1346–55) of Serbia, son of Stephen Uros III. He is also known as Stephen Uros IV. He was procl...

battleship

(Encyclopedia)battleship, large, armored warship equipped with the heaviest naval guns. The evolution of the battleship, from the ironclad warship of the mid-19th cent., received great impetus from the Civil War. B...

parent and child

(Encyclopedia)parent and child, legal relationship, created by biological (birth) relationship or by adoption, that confers certain rights and duties on parent and child; in some states the courts have given the no...

tracer

(Encyclopedia)tracer, an identifiable substance used to follow the course of a physical, chemical, or biological process. In chemistry the ideal tracer has the same chemical properties as the molecule it replaces a...

zoology

(Encyclopedia)zoology, branch of biology concerned with the study of animal life. From earliest times animals have been vitally important to man; cave art demonstrates the practical and mystical significance animal...

Rockefeller Foundation

(Encyclopedia)Rockefeller Foundation, philanthropic institution established (1913) by John D. Rockefeller, Sr., to promote “the well-being of mankind throughout the world.” During its first 14 years the foundat...

amino acid

(Encyclopedia)CE5 General formula of an amino acid CE5 Peptide bond between two molecules of the amino acid alanine amino acid əmēˈnō [key], any one of a class of simple organic compounds containin...

life

(Encyclopedia)life, although there is no universal agreement as to a definition of life, its biological manifestations are generally considered to be organization, metabolism, growth, irritability, adaptation, and ...

contraband

(Encyclopedia)contraband, in international law, goods necessary or useful in the prosecution of war that a belligerent may lawfully seize from a neutral who is attempting to deliver them to the enemy. The term is s...

Alaric I

(Encyclopedia)Alaric I ălˈərĭk [key], c.370–410, Visigothic king. He headed the Visigothic troops serving Emperor Theodosius I. After the emperor's death (395) the troops rebelled and chose Alaric as their le...