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Mesolithic period

(Encyclopedia)Mesolithic period mĕzˌəlĭthˈĭk [key] or Middle Stone Age, period in human development between the end of the Paleolithic period and the beginning of the Neolithic period. It began with the end o...

Iron Age

(Encyclopedia)Iron Age, period in the development of industry that begins with the general use of iron and continues into modern times. In Asia, Egypt, and Europe it was preceded by the Bronze Age. It did not begin...

Neolithic period

(Encyclopedia)Neolithic period or New Stone Age. The term neolithic is used, especially in archaeology and anthropology, to designate a stage of cultural evolution or technological development characterized by the ...

silicon

(Encyclopedia)silicon, nonmetallic chemical element; symbol Si; at. no. 14; interval in which at. wt. ranges 28.084–28.086; m.p. 1,410℃; b.p. 2,355℃; sp. gr. 2.33 at 25℃; valence usually +4. Silicon is the ...

Moorish art and architecture

(Encyclopedia)Moorish art and architecture, branch of Islamic art and architecture developed in the westernmost lands of the Muslims, known as the Maghreb: N Africa and Spain. The Great Mosque at Al Qayrawan in Tun...

Pennsylvania Dutch

(Encyclopedia)Pennsylvania Dutch [Ger. Deutsch=German], people of E Pennsylvania of German descent who migrated to the area in the 18th cent., particularly those in Northampton, Berks, Lancaster, Lehigh, Lebanon, Y...

sand

(Encyclopedia)sand, rock material occurring in the form of loose, rounded or angular grains, varying in size from .06 mm to 2 mm in diameter, the particles being smaller than those of gravel and larger than those o...

Hadid, Dame Zaha

(Encyclopedia)Hadid, Dame Zaha, 1950–2016, British architect, b. Baghdad, studied American Univ., Beirut (1968–71), Architectural Association School, London (grad. 1977). A partner in Rem Koolhaas's Office for ...

Mycenaean civilization

(Encyclopedia)Mycenaean civilization mīsēnēˈən [key], an ancient Aegean civilization known from the excavations at Mycenae and other sites. They were first undertaken by Heinrich Schliemann and others after 18...

Berbers

(Encyclopedia)Berbers, aboriginal Caucasoid peoples of N Africa, called Imazighen in the Tamazight language. They inhabit the lands lying between the Sahara and the Mediterranean Sea and between Egypt and the Atlan...