=Xanthip´pe= or =Xantip´pe=. The wife of Socrates, remarkable for her ill-humor and fretful disposition. She was a constant torment to her husband, and on one occasion, after bitterly reviling him, she emptied a vessel of dirty water on him, on which the philosopher coolly remarked, "After thunder rain generally falls." =Xenoc´rates.= An ancient philosopher born at Calcedonia, and educated in the school of Plato, whose friendship he gained. Died B.C. 314. =Xen´ophon.= A celebrated Athenian, son of Gryllus, famous as a general, philosopher, and historian. He joined Cyrus the Younger in an expedition against Artaxerxes, king of Persia, and after the decisive battle of Cunaxa, in which Cyrus was defeated and killed, the skill and bravery of Xenophon became conspicuous. He had to direct an army of ten thousand Greeks, who were now more than six hundred leagues from home, and in a country surrounded by an active enemy. He rose superior to all difficulties till the celebrated "Retreat of the Ten Thousand" was effected; the Greeks returning home after a march of two hundred and fifteen days. Xenophon employed his pen in describing the expedition of Cyrus, in his work the "Anabasis." He also wrote the "Cyropædia," "Memorabilia," "Hellenica," etc. He died at Corinth in his ninetieth year, about 360 years before the Christian era. =Xer´xes= succeeded his father Darius on the throne of Persia. He entered Greece with an immense army, which was checked at Thermopylæ by the valor of three hundred Spartans under king Leonidas, who, for three successive days, successfully opposed the enormous forces of Xerxes, and were at last slaughtered. From this period the fortunes of Xerxes waned. His fleet being defeated at Salamis, and mortified with ill-success, he hastened to Persia, where he gave himself up to debauchery, and was murdered in the twenty-first year of his reign, about 464 years before the Christian era. =Za´ma.= A town of Numidia, celebrated as the scene of the victory of Scipio over Hannibal, B.C. 202. =Ze´no=, a celebrated philosopher, the founder of the sect of Stoics, was born at Citium in Cyprus. He opened a school in Athens, and soon became noticed by the great and learned. His life was devoted to sobriety and moderation. He died at the age of ninety-eight, B.C. 264. =Ze´no.= A philosopher of Elea or Velia, in Italy. He was the disciple, or, according to some, the adopted son of Parmenides. Being tortured to cause him to reveal his confederates in a plot he had engaged in, he bit off his tongue that he might not betray his friends.