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Saronic Gulf

(Encyclopedia)Saronic Gulf sərŏˈnĭk [key], arm of the Aegean Sea, indenting SE Greece and separated from the Gulf of Corinth by the Isthmus of Corinth. The Saronic Gulf is the eastern terminus of the Corinth Ca...

Apollonius of Perga

(Encyclopedia)Apollonius of Perga, fl. 247–205 b.c., Greek mathematician of the Alexandrian school. He produced a treatise on conic sections that included, as well as his own work, much of the work of his predece...

Salamis, island, Greece

(Encyclopedia)Salamis, island, E Greece, in the Saronic Gulf, W of Athens. It early belonged to Aegina but was later under Athenian control, except for a brief period after it was occupied (c.600 b.c.) by Megara. I...

Byzantium

(Encyclopedia)Byzantium bīzănˈshēəm, –shəm, –tēəm [key], ancient city of Thrace, on the site of the present-day İstanbul, Turkey. Founded by Greeks from Megara in 667 b.c., it early rose to importance ...

geometry

(Encyclopedia)geometry [Gr.,=earth measuring], branch of mathematics concerned with the properties of and relationships between points, lines, planes, and figures and with generalizations of these concepts. Eucli...

Cylon

(Encyclopedia)Cylon sīˈlän [key], fl. 7th cent. b.c., Athenian nobleman. After a triumph in the Olympic games, Cylon, at the instigation and with the support of his father-in-law, Theagenes, the tyrant of Megara...

Heraclea Pontica

(Encyclopedia)Heraclea Pontica pŏnˈtĭkə [key], ancient Greek city, a port on the southern shore of the Black Sea. Founded in the 6th cent. b.c. by colonists from Megara and Boeotia, it rose to a position of gre...

Hypsicles of Alexandria

(Encyclopedia)Hypsicles of Alexandria hĭpˈsĭklēz [key], astronomer of ancient Greece. Some authorities place Hypsicles in the 2d cent. b.c. and some in the 2d cent. a.d. The 14th and 15th books of Euclid's Elem...

Lysias

(Encyclopedia)Lysias lĭsˈēəs [key], c.459–c.380 b.c., Attic orator; son of Cephalus, a Syracusan. After the capture (404 b.c.) of Athens by the Spartans, the Thirty Tyrants caused the arrest of Lysias and his...

Shaker Heights

(Encyclopedia)Shaker Heights, city (1990 pop. 30,831), Cuyahoga co., NE Ohio, a residential suburb of Cleveland; inc. 1912. Founded (1905) as a suburban development by Cleveland businessmen Oris and Mantis Van Swer...