A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9
        
Y2K bug
Potential problem in computers and computer networks at the beginning of the year 2000.
yacht
Sail- or motor-driven vessel used for racing or recreation.
Yagoda, Genrikh (Grigoryevich)
Soviet politician.
yahrzeit
In Judaism, the anniversary of the death of a parent or close relative, commonly observed by burning a candle for an entire day.
yak
Massive ox (Bos grunniens mutus) of high Tibetan plateaus.
Yakima River
River, south-central Washington, U.S.
yakuza
Japanese gangsters.
Yale University
Private university in New Haven, Conn., a traditional member of the Ivy League.
Yalong River
River, Sichuan province, southern China.
Yalow, Rosalyn (Sussman)
U.S. medical physicist.
Yalta
City (pop., 2001: 82,000), southern Crimea, Ukraine.
Yalta Conference
(Feb. 4–11, 1945) Conference of Allied leaders at Yalta to plan Germany's defeat in World War II.
Yalu River
River, eastern Asia, between northeastern China and North Korea.
yam
Any of several plant species of the genus Dioscorea (family Dioscoreaceae, or yam family), native to warmer regions of both hemispheres.
Yama
In Indian mythology, the lord of death.
Yamagata Aritomo
First prime minister under Japan's parliamentary regime (1889–91, 1898–1900).
Yamal Peninsula
Peninsula between the Kara Sea and the Gulf of Ob, northwestern Siberia, west-central Russia.
Yamamoto Isoroku
Japanese naval officer.
Yamasee War
(1715–16) Conflict between Indians and American colonists.
Yamato Takeru
Japanese folk hero who may have lived in the 2nd century AD.
Yamazaki Ansai
Japanese exponent of the philosophy of the Chinese Neo-Confucianist Zhu Xi.
Yamm
Ancient West Semitic deity who ruled the oceans, rivers, lakes, and underground springs.
Yamoussoukro
Town (pop., 1995 est.: 110,000), capital designate of Côte d'Ivoire.
Yamuna River
River, north-central India.
Yancey, William Lowndes
U.S. politician.
Yang Hui
Mathematician active in the great flowering of Chinese mathematics during the Southern Song dynasty.
Yang, Chen Ning
Chinese-born U.S. theoretical physicist.
yangban
Highest social class of the Korean Choson dynasty (1392–1910).
Yangdi
Second ruler of the Chinese Sui dynasty.
Yangôn
City (pop., 2005 prelim.: 4,082,000), principal port, and historical capital of Myanmar (Burma), on the Yangôn River.
Britannica Concise is a complete, 28,000 article, single-volume encyclopedia from the editors of Encyclopædia Britannica. Visit Encyclopædia Britannica Online to access the complete Encyclopædia Britannica, the Britannica Student Encyclopedia, a world atlas, interactive timelines, Merriam-Webster's Collegiate Dictionary and Thesaurus, hundreds of magazine titles, daily features and much more.