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Pestalozzi, Johann Heinrich

(Encyclopedia)Pestalozzi, Johann Heinrich yōˈhän hīnˈrĭkh pĕsˌtälôtˈsē [key], 1746–1827, Swiss educational reformer, b. Zürich. His theories laid the foundation of modern elementary education. He stu...

Pizarro, Gonzalo

(Encyclopedia)Pizarro, Gonzalo pēthärˈrō [key], c.1506–1548, Spanish conquistador, brother of Francisco Pizarro. A lieutenant of his brother in the conquest of Peru, Gonzalo aided in the defense of Cuzco (15...

illustration

(Encyclopedia)illustration, any type of picture or decoration used in conjunction with a text to embellish its appearance or to clarify its meaning. Illustration is as old as writing, with both originating in the p...

terra-cotta

(Encyclopedia)terra-cotta tĕrˈə kŏtˈə [key] [Ital.,=baked earth], form of hard-baked pottery, widely used in the decorative arts, especially as an architectural material, either in its natural red-brown color...

violin

(Encyclopedia)CE5 Violins and viols violin, family of stringed musical instruments having wooden bodies whose backs and fronts are slightly convex, the fronts pierced by two ƒ-shaped resonance holes. The instr...

calculator

(Encyclopedia)calculator or calculating machine, device for performing numerical computations; it may be mechanical, electromechanical, or electronic. The electronic computer is also a calculator but performs other...

bivalve

(Encyclopedia)CE5 Internal anatomy of a clam, Anodonta, representative mollusk of the class Pelecypoda (the bivalves) bivalve, aquatic mollusk of the class Pelecypoda (“hatchet-foot”) or Bivalvia, with a la...

depression, in psychiatry

(Encyclopedia)depression, in psychiatry, a symptom of mood disorder characterized by intense feelings of loss, sadness, hopelessness, failure, and rejection. The two major types of mood disorder are unipolar disord...

Hadrian, Roman emperor

(Encyclopedia)Hadrian hāˈdrēən [key], a.d. 76–138, Roman emperor (117–138), b. Spain. His name in full was Publius Aelius Hadrianus. An orphan, he became the ward of Trajan. Hadrian distinguished himself as...

Bruegel

(Encyclopedia)Bruegel, Brueghel, or Breughel all: broiˈgəl, Du. bröˈgəl [key], outstanding family of Flemish genre and landscape painters. The foremost, Pieter Bruegel, the Elder, c.1525–1569, called Peasan...