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Llywelyn ap Iorwerth
(Encyclopedia)Llywelyn or Llewelyn ap Iorwerth , lo͞oĕlˈĭn [key] (Llywelyn the Great), 1173–1240, Welsh prince; grandson of Owain Gwynedd. He first proved his capacity by wresting (1194) N Wales from his unc...hardening
(Encyclopedia)hardening, in metallurgy, treatment of metals to increase their resistance to penetration. A metal is harder when it has small grains, which result when the metal is cooled rapidly. Sometimes small ar...bronze sculpture
(Encyclopedia)bronze sculpture. Bronze is ideal for casting art works; it flows into all crevices of a mold, thus perfectly reproducing every detail of the most delicately modeled sculpture. It is malleable beneath...Bakelite
(Encyclopedia)Bakelite bāˈkəlīt [key] [for its inventor, L. H. Baekeland], synthetic thermosetting resin. It has been widely used both alone, to form whole objects, and in combination with other materials, as a...Roland
(Encyclopedia)Roland rōˈlənd [key], the great French hero of the medieval Charlemagne cycle of chansons de geste, immortalized in the Chanson de Roland (11th or 12th cent.). Existence of an early Roland poem is ...folk medicine
(Encyclopedia)folk medicine, methods of curing by means of healing objects, herbs, or animal parts; ceremony; conjuring, magic, or witchcraft; and other means apart from the formalized practice of medical science. ...plastic
(Encyclopedia)plastic, any organic material with the ability to flow into a desired shape when heat and pressure are applied to it and to retain the shape when they are withdrawn. The first important plastic, cel...mask
(Encyclopedia)mask, cover or partial cover for the face or head used as a disguise or protection. Masks have been worn from time immemorial throughout the world. They are used by primitive peoples chiefly to impers...plating
(Encyclopedia)plating, application of a plate, or coat, of metal to a surface for decoration, reflection of light, protection against corrosion, or increased wearing quality. The practice is of ancient origin: gild...pressure group
(Encyclopedia)pressure group, body, organized or unorganized, that actively seeks to promote its particular interests within a society by exerting pressure on public officials and agencies. Pressure groups direct t...Browse by Subject
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