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Lepidodendron and Sigillaria

(Encyclopedia)Lepidodendron sĭjĭlârˈēə [key], two principal genera of an extinct group of primitive vascular trees. They dominated the forests of the early Carboniferous period until the ferns gained ascendan...

Penderecki, Krzysztof

(Encyclopedia)Penderecki, Krzysztof kshĭshˈtôf pändĕrĕtsˈkē [key], 1933–2020, Polish composer. His music is characterized by unusual sonorities, and he devised his own system of notation to convey the eff...

Illyria and Illyricum

(Encyclopedia)Illyria ĭlĭrˈĭkəm [key], ancient region of the Balkan Peninsula. In prehistoric times a group of tribes speaking dialects of an Indo-European language swept down to the northern and eastern shore...

Spanish colonial art and architecture

(Encyclopedia)Spanish colonial art and architecture, fl. 16th–early 19th cent., the artistic production of Spain's colonies in the New World. These works followed the historical development of styles previously e...

neoexpressionism

(Encyclopedia)neoexpressionism, term given to an international art movement, mainly in painting, that began in the 1960s and 1970s, was a dominant mode in the 1980s, and has continued04/98 into the 1990s. A reactio...

savings and loan association

(Encyclopedia)savings and loan association (S&L), type of financial institution that was originally created to accept savings from private investors and to provide home mortgage services for the public. The fir...

bow and arrow

(Encyclopedia)bow and arrow, weapon consisting of two parts; the bow is made of a strip of flexible material, such as wood, with a cord linking the two ends of the strip to form a tension from which is propelled th...

Guelphs and Ghibellines

(Encyclopedia)Guelphs and Ghibellines gwĕlfs, gĭbˈəlēnz, –lĭnz [key], opposing political factions in Germany and in Italy during the later Middle Ages. The names were used to designate the papal (Guelph) pa...

object-oriented programming

(Encyclopedia)object-oriented programming, a modular approach to computer program (software) design. Each module, or object, combines data and procedures (sequences of instructions) that act on the data; in traditi...

paleontology

(Encyclopedia)paleontology pāˌlēəntŏlˈəjē [key] [Gr.,= study of early beings], science of the life of past geologic periods based on fossil remains. Knowledge of the existence of fossils dates back at least...