| a sea in N Europe, bounded by Denmark, Sweden, Finland, Estonia, Latvia, Lithuania, Poland, and Germany. ab. 160,000 sq. mi. (414,000 sq. km). |
| Baltic Sea An arm of the Atlantic Ocean in northern Europe bounded by Denmark, Sweden, Finland, Estonia, Latvia, Lithuania, Poland, and Germany. It opens to the North Sea via channels and canals, is mostly shallow, with relatively low salinity, and often freezes for three to five months of the year. |