Columbia Encyclopedia

(Encyclopedia) North Channel, strait, c.75 mi (120 km) long, between Northern Ireland and Scotland, connecting the Irish Sea with the Atlantic Ocean. It is 13 mi (21 km) across at its narrowest point. ...

(Encyclopedia) calcium-channel blocker, any of a class of drugs used in treating hypertension, angina pectoris, and certain arrhythmias. They prevent the calcium ions needed for muscle contraction from entering the ...

(Encyclopedia) Andaman and Nicobar Islands ănˈdəmən, nĭkˈōbär [key], union territory (2001 provisional pop. 356,265), India, in the Bay of Bengal. Port Blair, in the Andamans, is...

(Encyclopedia) Saint George's Channel, strait, c.100 mi (160 km) long and 50 to 95 mi (80–153 km) wide, linking the Atlantic Ocean and the Irish Sea. It separates SE Ireland from Wales. ...

(Encyclopedia) Georgian Bay, large northeastern extension of Lake Huron, S Ont., Canada, separated from Lake Huron by Manitoulin Island and by the Bruce Peninsula; Lucas Channel is its chief connection with Lake Hur...

(Encyclopedia) Alderney ōrēnyēˈ [key], anc. Riduna, island, c. 3 sq mi (7.7 sq km), in the English Channel, northernmost of the larger Channel Islands. It is separated from the Frenc...

(Encyclopedia) Thousand Islands, a group of more than 1,800 islands and 3,000 shoals in the St. Lawrence River, E of Lake Ontario, N N.Y. and S Ont., stretching c.50 mi (80 km) along the U.S.-Canada line. Most of th...

(Encyclopedia) Senkaku Islands sĕnˈkäko͞o [key], small, uninhabited island group, 8 sq mi (20.7 sq km), Okinawa prefecture, extreme SW Japan, in the East China Sea. Located 90 mi (45 km) NNW of Ishigaki in the R...

(Encyclopedia) Phoenix Islands, group of eight islands, 11 sq mi (28 sq km), central Pacific, N of Samoa. The chain comprises a portion of Kiribati. The two most important are Kanton (or Abariringa) and Enderbury Is...

(Encyclopedia) Frisian Islands frĭzhˈən [key], chain of low-lying islands, off the coasts of the Netherlands, Germany, and Denmark, in the North Sea. The West Frisian Islands, also known as the Wadden Islands, be...