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Possible definitions for trifoly

tribology
Study of the interactions of sliding surfaces. It includes three subjects: friction, wear, and lubrication. Many manifestations of tribology are beneficial and make modern life possible. Many others are serious nuisances, and careful design is necessary to overcome problems caused by excessive friction or wear. Friction uses up, or wastes, a substantial amount of the energy generated by humans; in addition, a great deal of productive capacity is devoted to replacing objects that have worn out.


Tripoli
("The Western Tripoli") City (metro. area pop. 1995 est.: 1,682,000), capital of Libya. Located on the Mediterranean Sea, it is the nation's largest city and chief seaport. Founded by the Phoenicians c.7th cent. BC, it was known as Oea in ancient times, and was one of the three cities of the region of Tripolitania. It was controlled by the Romans from the 1st cent. BC, and later by the Byzantines. It was conquered by the Arabs in 645. Conquered by the Turks in 1551, it was made a colonial capital of the Ottoman empire. It was under Italy's control 1911-43, after which it was occupied by the British until Libya's independence in 1951. The U.S. bombed it in 1983 in response to terrorist activity. Historical structures include numerous mosques and a Roman triumphal arch. In 1973 Al-Fateh Univ. replaced the former Univ. of Libya.

("The Eastern Tripoli") Seaport (pop., 1991 est.: 240,000), NW Lebanon. Founded c.700 BC, it became the capital of a federation of three Phoenician city-states: Sidon, Tyre, and Arvad. It was controlled by the Seleucids and Romans, and taken by the Muslims in the mid-7th cent. AD. Besieged and partially destroyed by crusaders in the early 12th cent., it was rebuilt by the later crusaders. It was occupied by the Egyptians in the 1830s, the British in 1918, and the British and Free French in 1941. It became part of the Republic of Lebanon in 1946. A center of Christian-Muslim conflict, it was the scene of a siege in 1983 by Palestinian rebels against Y. Arafat. It is a major port, a commercial and industrial center, and a popular beach resort. At the terminus of an oil pipeline from Iraq, it is an important oil storage and refining center.


Tripolis
City (pop., 1991: 22,000), S Greece, the commercial center of the central Peloponnese. It was founded in the 14th cent. AD as Drobolitza to replace the ancient cities of Pallantium, Tegea, and Mantineia. Rebuilt in 1770, it became the seat of the local Turkish pasha. The city prospered until 1828, when it was destroyed in the War of Greek Independence. It was rebuilt after 1834.

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